This topic is now closed. IchoTolot has taken over this project and created a new topic for it, which can be found here: https://www.lemmingsforums.net/index.php?topic=4148.0
I suggested this idea once before, but now that NeoLemmix is a bit more stable (with updates not occurring on an almost-daily basis, and when they do, generally not changing or adding to gameplay mechanics but only interface-related or graphical features), perhaps it's a better time to suggest this project now.
So... who would be interested in such a thing? I'd like to aim to create something similar to the official games / Lemmings Plus packs in size; with contributions from a variety of authors. Of course, I'll contribute too.

I think for stylistic reasons it's probably best we leave out the Horror, Xmas and Sega graphic sets (though if you disagree feel free to debate it), but all the others (official ones and LPII / LPIII sets) should be alright. The Xmas style in particular is out of place due to the different theme (and otherwise similarity to the Snow style); for Horror it's a matter of the much higher graphics quality than the others. Thinking more about it, Sega is probably fine...
I won't say this project is started yet, but if there's interest, then I'd say we should get this going! Obviously, NeoLemmix-based contest entries would mostly be good candidates to include here, as well as new levels. Existing levels that work particularly well under NeoLemmix mechanics, perhaps with some adjustments to make more use of NeoLemmix features, could also be good. One thing I do wonder about though is if the new skills will see much use; I'd rather either have them used regularly, or not at all, instead of just being these things used occasionally in the odd level here and there (though of course, at least Mechanic and Cloner will probably end up like that anyway; even in my own packs they've done so as they're quite situation-dependant and very vunerable to causing backroutes or being avoided themself).
So yeah. What do you guys think? Should we try and put together such a project?
Read before submitting!Levels that were originally designed for other engines (including traditional Lemmix) are generally fine, but be sure to test them
UNDER NEOLEMMIX before submitting. Although at a quick glance everything may appear to work the same, a lot of subtle mechanics differ - for example, a climber
cannot pass through a small overhang at the top of a short wall in NeoLemmix. Also please tidy up skillsets (remove any skills that are unused rather than just setting them to zero), and if there's no reason the level needs a time limit, remove the time limit altogether. In short - this is a
NeoLemmix pack; so while your levels don't have to go out of their way to make use of new NeoLemmix features, these kind of small tweaks to be consistent with the general approaches used in NeoLemmix should be made.
Also, make sure to put your name in the Author field!
Levels submitted so far:All submitted levels can be found in this Dropbox folder:
https://www.dropbox.com/sh/aig6srv3mtvvk39/AACnOIdWRlOWqkDQN_w7Lyt1a