I have started playing around with your editor and have spent many hours of enjoyment with it. I am currently working on making some tweaks to world 0 and plan to do the following with it:

revamp and beautify aleroth.
player home in aleroth
revamp aleroth cave.
remove book pile in mardaneous's house that slows him down when unfreezing lanilor because mardaneous is always painfully slow. Those extra seconds matter to me.
remove stormfest castle treasure room door (the teasing is over, time to give the people what they want)
remove dr. elrath stupid door puzzle (too many people lost saves to this, also this makes no sense lore wise how dr. elrath would even get access to parts of his house without being locked in forever. Seeing as the only teleporter stones in existance are with the divine one). I have already solved this quest many times before, im sure many have and its time for it to go.

I had to scrap some map changes as I had accidently pressed some keys which deleted random objects and walls on the maps of world 0.

I am impressed with this editor! I wanted to personally thank you and tell you did a great job for even just a 0.2 release.

I have some feature suggestions if you are interested:
zoom ability or atleast a minimap to help find locations more precisely.
changing the texture "brush" size. Its too large, I cant quite make fine details without using in game objects to cover texture lines.
an ability to lock certain keys like space bar from accidental press.
creating backups before modifying
maybe setting up a save file timer (every 15 or 30 mins)?

I understand object properties are a bit of an issue now so I didnt list that. Also I am not sure if all of the textures are being loaded. i cant find aleroth's cobblestone road texture anywhere.

also if anyone is interested, i can post my modifications on the forums if anyone is interested.