Werehog, I forgot to send you the textures. Don't worry, I'll do it today.
Lightspeed and DOOD64, well, I really know that the end post signs are character dependent and the sprites are located in the .plr files, but here in my computer I didn't need to replace the files, only the PLAYf0, TAILf0 and KNUXf0 lumps.
Lightspeed, the progress is a bit of a small indicator. But I'll probably remove the progress from the first post, because other map editors would need to PM me how much % progress is done so I can update constantly. It's best if the progress stays only on the sigs. So in other words, it is at 81%. Well, it was yesterday. Now it's at around 93%.
filio, you can check out Sonic Heroes for ideas. I do that often. When I'm done finishing a segment of platforms and such, I run out of ideas, and start playing the original Lost Jungle to remind myself of the general layout and get inspired. Oh, and if in the future you are able to create cars that zoom back and forth, that'd be awesome. (Using Polyobjects).