Having inched ever closer to the end of the game, my immediate suggestions are as follows:
1) Scale stat gains to levels. When you're level 3, a 1 point stat gain is a huge percentage boost. When you're level 25, 1 point is a much lower % increase. not to mention that characters are still faced with 0 point stat gains. Despite this fact, grinding for a single level takes over 30 minutes once you reach level 25. If exp requirements are increasing exponentially (seems to be about 1.3^x, which is high by any standards), so should stat gains.
2) Scale monster exp fairly. Right now, there's a HUGE discrepancy between difficulty and exp reward. It's so huge that exp is meaningless. Why am I getting the same amount of exp for an easy monster as one that has a 20% chance of killing me within seconds? If monster difficulty scales exponentially (and it does), then so should the exp rewards.
3) Tone down the random encounters. Random encounters are so difficult that the boss battles are easy by comparison. I mean this in all seriousness. The spell Weak in particular is a death sentence. Once you have it cast on you, if you don't immediately kill the enemy or run away... you can't heal fast enough to counteract the health you lose. Bosses on the other hand are a cakewalk. *heal* *heal* *attack* rinse and repeat. This seems 100% backwards. When you enter battle with full health and mana and with the best gear available to you, you shouldn't have to worry about the random encounter getting lucky and two/three/four-shotting you from full health.
I have to point out again that Regressia is a single-player RPG, meaning it should be beatable.
There are two conventional ways to beat any RPG:
a) playing it smart i.e. stocking up on items, being aware of weaknesses, etc.
b) outleveling the competition
or a combination of the two. This is why I say Regressia needs some work in this department. It's unfathomable that I should be killed by random enounters when I have ~120 balms and somas on my character AND have vastly outleveled the suitable grinding areas AND heal myself any time I fall below 80% HP. I welcome a challenge, but getting killed by the luck of the draw like this is just ridiculous, especially when all progress is lost every time you die.