No, we're not necessarily done with additions. I think, given the current status and the fact that we want to finalise the list of included levels so we can start work on ordering, the next step should be to make a final call for suggestions for additions, and any that are suggested should be put to a vote (whether by a forum poll or just by getting people to post). Then, decide which levels to remove to get back down to exactly 150.
At the moment, my suggestions for additions are:
* Special graphics levels, which should be kept as one per rank rather than sorted according to difficulty. There was an early consensus in favour of keeping the special graphics levels, which seems to have been disregarded in the latest lists for no apparent reason.
* Other 4 "Lane of Lament" is a really strong level that got missed somehow.
* Sunsoft 9 "Evacuating a coal mine" was included in the earlier lists. Nepster suggested removing it, but I disagreed, so there was never a consensus to remove it.
* Levels 2 and 3 of Lemmings 2 Classic. As we seem to have a majority agreement in favour of including remakes of PSP and ZX levels, there's no reason not to extend this to L2 levels, and I think these two would make the cut.
I've watched Wafflem's videos of the PS3 remakes, and I don't think we should include those. Nearly all levels use teleporters and pickup skills; the remakes look very bland compared to the majority of original levels; I haven't seen any with particularly interesting solutions.