To my understanding, a 3.10.xx images should mean following:
- an image based on 3.10 release, which contains hot-fixes of bugs,
discovered since release.

This means, that image should be STABLE, no experimental code (like
removing traits), only small fixes.

You free to go with removing traits from base 3.11 (and with
supporting option to load them back, of course), but not in any
3.10.xx images.

-- 
Best regards,
Igor Stasenko AKA sig.