I take the titles in advance:

Before Christ 22 "Egypt Forest"
Before Christ 23 "Frozen Forest"

  This is good for official balance.

  "B.C. 22 and 23" can be note both together

  Bumping this to let others know about this and also to add in a couple of other suggestions.

RGB Stuff Prison - A really solid level all around - and a wonderful extra ending trick to shave those two moves!
Before Christ 22 - This one is too good to not consider in my opinion. Could be renamed to 'Forest Temple', or 'Wooden Temple' if the name is an issue. The only problem is that it would then ruin the 'Before Christ' Series.
Rising Sun - This level is really nice, it is such a great level with a really cool trick that stumped me for a lot longer that it should have. :D
Simple RGB Way - Simply perfect in every way :)

  Here's some levels which could be official in my opinion:
QuadroMaze
Support stuck
Support stuck 2
Hinge Master
Bat Cave
Polynomial

There will be more levels other than these which are great - and probably levels on this list which don't have the quality in your opinion, but these are a few of the levels which I remember playing and enjoyed solving.

  I'll pick it myself I want the level to be official:
L-Shape Chaos
Supports
Kindness
Locked in
Tightrope
Embraced
Reconstruct
Cowboys from Mars

  I'm quite busy at the moment and there are a lot of levels I didn't even play, unfortunately, so there were no new levels added so far.

  Please Regenerate the pack, Are there no official references yet?

  huh. I'm commenting on this so people know about it