Please don't close up shop, this is probably the best h-game being actively developed right now. If I could offer any criticisms they'd be minor, mostly I think due to the early stages of the game's content.
Primarily, the attributes you have are not particularly impactful, so gaining/losing them is equally irrelevant. I'd guess this'll change later when there's more events that care about certain attributes and after a possible balance pass making them more important.
Also the gym scene with Alexia should (now that there's a relationship system) increase her dominance over you and lower her respect towards you. There should also be an option for players on the eventual dominant-over-Alexia route that allows them to sort of abstain so they don't lose or gain anything if they somehow stumble into that scene. Oh and more save slots, a lot more, at least one per character you can choose, but again, pretty minor.