Thanks for giving my game a try, and nice thoughtful feedback!
It seems like your main problem is the engine.
I have lots of reasons to use RPG Maker, one of the main concerns is that I have limited time and resources to learn game making, so the engine I used when I was little is the engine I choose.
However, I politely disagreed with your conclusion that you think the engine is holding me back, since I believe I can achieve most of the things I want with this engine for now.
I am open to suggestions and looking for a new engine that I can try that fits some of my current limiting conditions. Thank you.