didn't read the first post but heres what i think.
@ charger bandit
nice program, however may i suggest a few things. i am personally not a fan of the background of your window. may i suggest the option to switch it to plain windows grey or just one solid color.
to make the model creation process quicker you should have a few more things auto filled in. such as static = yes, exploadable = no, immobile = no, collision = polygon, etc. the user can change these options of course but it would make the majority of models faster to get in game.
an idea someone else had was to have a preview of the model in front of a segment. i think you could improve on this by having a preview similar to the image attached to this post.
Also
there is one thing preventing me from using this program full time. thumbnails. you should make it able to create a preview of the model for the editor.
master the process of entity creation first, then master segments. keep it all to one easy window and keep pop ups, messages, warnings, and distractions to a minimum.
excellent job so far.
thanks for reading.
JZ
http://sites.google.com/site/jordanz2010/