Hmm, the community pack should remain the flagship pack, and its quality is already high enough so that we won't find 10-20 easy ditches to pepper the community pack with neutral lix.
Into existing good levels, I believe it's hard to retrofit neutrals and still keep the level's main idea. I'd rather turn a worthwhile result into a second, independent level. Thus, we can extend the pack with completely new levels, or instead add them as a standalone pack/rank.
Luckily, we don't have to rush either the decision nor any design work. Before I have a concept for singleplayer, we'll iterate on the multiplayer physics with the experimental versions. There are many questions in the design still, and it's not clear what will pull its weight in multiplayer:
Should there be different types of exits? One that takes normals, one that takes neutrals, one that takes both? Should players' lix still count normally when there are neutrals on the map? How should the neutrals spawn, do we have hatches for them, or can we add stragglers to the map directly? Should the level format extend, or even change entirely, to support stragglers?
I'm 50:50 on a format change around 2023/2024 to support all this. That wouldn't be a light decision, and it needs a thorough battle plan. By then, we'll likely have a clearer picture in mind for neutrals in singleplayer.
-- Simon