My experiences have been similar. I do still need to look up spells and item prices and such from time to time, so I did integrate those from 5e since the data is readily available[0] under a free(-ish) license. I figure if you need to look up rules, you're probably better off pulling out a book and using the index.

I don't expect my character generators to surpass the many resources that are out there already. The one way in which they might be superior is that they'll offer suggestions that make more sense given the current setting, as well as being readily available. I do want the app to help with stage management, since I don't have the attention to spare for picking out music or managing lighting as I'm trying to tell a story.

Definitely agree about Roll20 being too heavy. I just want to drag tokens around on a map. Unfortunately, that's also a very different project from the one I'm building. I haven't used it at the table, but Schmeppy[1] might be closer to what you're looking for. I look forward to trying out the Dynamic Dungeons Editor once I'm back to playing in-person, too.[2]

[0] https://github.com/5e-bits/5e-database

[1] https://shmeppy.com/

[2] https://store.steampowered.com/app/1694430/Dynamic_Dungeons_...