I never really used anything earlier than RMXP, so I can only comment on that and what's come since.
Thinking of all the different versions of the engine, what might be possible in other engines or mapping tools, or what you'd like to see that you haven't yet seen anywhere (except 3D - please don't mention 3D), what would make a great map builder and could actually be implemented into MV without turning it into a completely different engine?
For me ...
What can you add? I'm sure I've left a lot out and will only realise it when I see other responses.
Thinking of all the different versions of the engine, what might be possible in other engines or mapping tools, or what you'd like to see that you haven't yet seen anywhere (except 3D - please don't mention 3D), what would make a great map builder and could actually be implemented into MV without turning it into a completely different engine?
For me ...
- More layers
- More control over what goes on what layers
- Autotile drawing like XP (drawing with autotile A doesn't cause what you've already drawn with autotile B to get messed up)
- Autotile expansion (double-click on an autotile and it opens up all the patterns so you can choose which one you want to use)
- Lots of autotiles
- Mix & Match tilesheets (like Ace's & MV's tile slots)
- Priorities (like XP, so tiles correctly show in front of or behind the player and events)
- Tiles that act like a counter but don't draw like a counter (I'd like to be able to designate fences as counters so you can talk to NPCs on the other side, but if you do that, they don't draw properly)
What can you add? I'm sure I've left a lot out and will only realise it when I see other responses.

