-For dialogues this was definitely something that was in consideration but the main reason I never implemented it was because of how daunting it would be once the roster gets bigger (ToT). Depending on how well development on the next part goes I'll definitely try and see if I can get things more organized
-Geckos and Sinners should have the same chance to appear on any given enemy encounter within the first 10 floors of Limbo, with Geckos being pretty much exclusively fodder
-Sadly I think freezing is just an rpgmaker thing. If by freezing you mean a black screen with audio i believe there should be other solutions online like editing a specific line of code in one of the .js files but I'm afraid I can't give an honest solution I feel comfortable sharing (ToT). For other bugs and stuff though feel free to share them literally anywhere, I'll definitely see them and will get to patching them once I've collected enough.