My crabbermind is by far my favorite character, and like others said, in a vacuum our damage is amazing, but in itrials my pets definitely die sometimes, I wish there were more pet IO set options especially for defenses, or a power pool or something that helps with pets specifically, I'm sure a lot of masterminds would like it too.
Tankyness on crabs is great, you have decent res (50-60%) on most res, and high defense. Perma serum is awesome.
I'd love to have more trade off options in damage vs. tankyness for pets though. However they have strong aoe and decent -res debuffs. And even if they don't neccesarily match a brute/scrappers dmg in itrials - they do provide strong support, their tactical trianings are just spectacular.
Also - it looks like mastermind henchmen that are 2 lvls down gain an extra 2 lvl shifts and ones that are 1 down gain an extra level shift in itrials - can that be applied to crabbermind pets too please?