It would be more a matter of the puzzle element being less complex and/or the level in general being buggier. (I'm hoping to have no wallswims, no voids, no unwinnable states etc. Of course, doesn't everyone...?) If Bulbapuck decides the deadline is "firm" this time instead of flexible within a day or so, it won't be as good a level, but I can trim it to what's ready-ish.
I'm putting off trying anyone else's until I'm finished with mine, but I'm already scared of SecretGlitch's. Not as competition -- as a player! I thought "Going Left" was awesome but I couldn't actually play through more than two consecutive screens anywhere in the level. Definitely not LoCP material.