They do lack speed out of the middle that is for sure.
Danger isn't getting any quicker and they still rely on him heavily for speed out of congestion. Holmes moving into the middle is a big tick.
Baz will add that speed (depending on how well he's recovered from an ACL) but still think they are maybe one quality mid short, especially when Danger hangs up the boots.
I'd imagine that's a big part of why they don't want to give up future first in Smith deal.
Cats ITK's reckon they are up their eyeballs in it with a few star midfielders. Andy Brayshaw and Zak Butters were the two mentioned.