Thank you so much! I’m really glad you’re enjoying the game.
At this stage, I unfortunately can't offer save compatibility between versions as every update so far have made structural changes to the game’s systems and data. That said, as development progresses save-breaking updates will happen less often until they are no longer necessary. That's one of the reasons I try to keep grind to a minimum, if you know what you're doing you can make a lot of money really early in the game.
Honestly, all the things you mentioned are in the plans. The only reason I haven't implemented many of these yet is because of limitations in the current character appearance system, but I’m already working on a new one that will enable all these features and many more