MonsterEnvy
Legend
Poster above listed desires for a video game, not a VTT.
1. Easy to use and access online character database. Roll20 has this to some extent, but it should be automated to extra your latest character from your "binder" of characters and slot them into a new adventure. Like how characters are stored in an MMO.
2. Automated rolling. Fantasy Grounds does this pretty well, Roll20 it is almost non-existent. If I click a target and hit Fire Bolt, have the dice rolled vs. AC calculated etc.
3. Players should be able to add and remove effects from themselves. Roll20 has almost no ability to add/remove effects, Fantasy Grounds can add effects but needs a specialized tool to let players remove them. Frees up the DM significantly.
4. Full integration of the rules. This is a MASSIVE licensing issue so good luck here, but drag and drop on level up that doesn't add the actual features is annoying. Have things like spells, class/race abilities, etc automatically built in and auto-level as the characters increase.
The full integration is not too hard actully. They can use everything from the 5e SRD. Though that would make some subclasses unavailable. But it's a good starting point.