Farming money and finding secret areas should be fun.

Yeah some people have different levels of comfort with debates... Its kinda like personal space. Varies from person to person and isnt really a matter of right or wrong until personal insults start appearing.

Castledan and Crocodile debated their cases very well and were both right because I can relate to how they feel. They're just on a different wavelength which adds a touch of spice to the mix

I've done a fair bit of farming in all the IGAvanias to some extent. While it was kinda enjoyable to stash enough cash to shell out on something like, for example, the Soul Eater Ring, once I reached the maximum limit of money earned, the farming element suddenly lost its appeal. This is because all of the money I earned just 'sat in the bank' so to speak but with nothing to really show for it apart from the fact that my character was very wealthy. In the back of my mind, I was always hoping that some kind of shady character (similar to Renon) would turn up at some point and give me the stark choice to sacrifice my wealth otherwise my need for greed would result in some kind of episode in hell. 

Yeah the shoutbox just worked way better. We met at a middle ground

As far as gaining money goes, there are a few notable examples I can think of, outside of the Castlevania series.

In Final Fantasy VII there are many things to spend money on, and you make just enough to get by for basically the whole game. However, if you know what you're doing, then you can level up your 'All' Materia and will be able to sell two or three of them for an insanely steep price, just in time to make a huge, frivolous purchase, and have way more than enough money to spare for anything you could ever dream of.
In Star Ocean Till The End of Time, you will go broke more than once, more than ten times, or even more than that. You're met with some high priced weapons fairly early on in the game that are impossible to afford so early on, but could really help you out for a decent chunk of the game. However, if you know what you're doing, you can map out two areas of the game before you're locked out of those high priced weapons, you'll be given two bunny statues as a reward, which can be sold to give you just enough to afford just one of those weapons. Later on in the game, you can "craft" a specific item (with the only cost being money), that will sell for about double than what you spent to make it, which will end up being your main source of income.
In many Namco games, most notably Tales of Abyss, Tales of Xillia 2, and Xenosaga Episode 1, there are casinos. You can spend money to buy coins for these casinos, but cannot exchange your coins for money, probably to avoid international gambling laws or something. Gambling is all chance, and there is a fairly low betting limit for these games that'll make you feel that you'll never get enough coins to get any of the good prizes, which you could actually sell to make the big bucks. However, if you know what you're doing, you'll play Poker in these games, which upon any sort of victory will give you the chance to "Double Up". Double Up is a win big or lose it all game, you double what you just made or you lose it all, and when you win you can double it up again. The game lets you double up about 12 times before it cuts you off, which even with the minimum payout will net you all the coins you could ever dream of. It's easily abusable, and with it you'll end up swimming in your gold vault like Uncle Scrooge.

The point is, all these games had various ways to earn money that basically let you pay your way through those high cost items items that you couldn't otherwise afford, unless you just spent countless hours gathering. There are people who enjoy grinding, but I think there are much less people who enjoy grinding for things that drop based on chance. I suggest a system that you can use to easily earn whatever you need to get things done, just so long as you know what you are doing.

Funny you mention currency use with such detail.

Imo no rpg has ever done currency correct. At least not that I have played.

Many of them are balanced so that the player can afford everything they could possibly want except some super op thing that you can still get late game.

To me games should be balanced so you can only get a fraction of what is useful, and its up to the player to choose wisely and whatnot. Shopping is fun, but not if you can just grab everything you need without thinking about it.

I doubt bloodstained will cater to my tastes regarding money though, oh well.

Yeah I know many games with alternative currencies. Those just arent what Id like more though. Generally the alternate currency tends to turn out to be something like a talent/level build.

Etrian odyssey tends to have a great balance for currency early games. But it generally falls into the usual rpg traps of being able to afford everything after the first stratum or two.

Yeah Im not really trying to push my desires into the game here, just trying to talk about it since it was brought up.

I dont really want to compare games with currency being a factor to those without a currency like megaman. But dark souls is a game I like, but I dont think it really handled currency good OR bad. Souls felt more like that talent/spec resource to me, and the shopping aspect of it is very secondary IMO.

I dont even know if bloodstained will even have much of a shop, most castlevania games dont. Oftentimes they are mostly used for a select few consumeables and post game bonus gadgets.

World of tanks is an unusual example because you fan easily spenf more moneh just to keep what you already have than you earn. I like my goodies to feel valuable, not to feel like there is a hole in my wallet that I refuse to fix or avoid =p.

Mmos in general really overdo prices because players who spend all day playing the market instead of the darn game always ruin their economies.

Secret rooms.
It was a real pleasure to discover a breakable wall. Sometimes you can see it obviously but sometimes not. In SOTN, I've ended slashing every pixel of walls to find a secret room... Then, I got the fairy.
So, why not ? Unless you don't have to be paranoïd to find it and to get this more interesting... you should do more than simply hitting the wall. Like, solve an enigma, touch an object like a lantern with a spell or arrow, etc...