WB asuma and edo asuma are both excellent choices for any blitzy setup for many reasons.

1. His buff is one of those most versatile in terms of who its usable with due to only needing full hp on the desired ninja, + only fully stops working if he dies

2. His buff is one of the few that can be used with any other buff and still work, i.e iruka and bee buffs don't stack but Wb can stack with either.

3. He gives an early chakra advantage allowing for more things to be cast 1st round, which is only really beaten by his edo version on edo teams

4. His kit basically leaves him in the always viable category of ninja since the only time that he is beaten at his particular role is his edo form for edo teams.

5. In the current u.s version Wb iruka and barrier ninja is the go to setup for kyuubi or summon fights.

I will have to test if its true myself, since group summons are not that controlled of environment. I know that his chakra increase doesn't cross fields so there is still value in regular wb, also helps that wb is much easier to get than Edo asuma.