Uh, well, I don’t hate him per se, but I don’t use him either (even this week when he’s boosted). His abilities are mostly fine, but the package doesn’t add up to something I want.
The Protect tiles are… fine, not that spending 9 AP and only getting Protect tiles is ever very exciting. Also, since all the tiles he makes are Yellow, they get matched away more quickly than you’d think (nearly every time anyone makes a Yellow match, in fact)
The tile buffing is… ok, but also not very exciting. Obviously unless you bring someone else to make some, he’s only buffing his own Protect tiles. Also on his own he doesn’t benefit from reducing the timers on countdown tiles, so you’d have to bring someone else for that as well. That list is pretty short, as they have to be characters that make (preferably non-blue) CDs that you want to expire as quickly as possible. At a quick glance that would be (from the 4* tier) Coulson, R&G, Fury, Mockingbird, War Machine (sort of), Kingpin, Vulture, and Main Event. Some decent members on that list, but the best are either already on teams with no room for a 3rd member, or have a painful overlap in colors. I guess Mockingbird could work out; I’d take a free Dive Bomb any day. (I’d cry a little if it took out someone with 900 health, of course)
And Dive Bomb. The problem with Dive Bomb is that by the time you finally get 14 Red AP (which he doesn’t accelerate in any way) AND a bunch of Protect tiles out (potentially by spending 9 Yellow AP, which he ALSO doesn’t accelerate in any way), the match is easily half over, everyone’s probably taken a bunch of damage already, and you just don’t need to do 20,000 damage (40,000 if he’s boosted) to anyone, so you’d probably have been better off with a cheaper power that does less damage. It’d be a fantastic power if it did half the damage for 7 AP, for example, on par with Army of One without the annoying “your allies must be downed or stunned” rider.
There are just too many Red abilities that do enough damage (less, but still enough), for a significantly lower AP cost, and many of them actually (gasp) generate AP in some way. Bombshell, Oldest Trick in the Book, Smite, RC Gauntlets, heck, even Cherry Bomb.