He's better than Hunter Miska.@Richard88 found his 3G after all.
Seriously, what does COL see in this guy?
Just a solid all around teammate off the ice and at practice?
To actually answer the question - he's a good fit in the locker room and is familiar with the team/system, understands his role, and is passable in a pinch for a few NHL games. Annunen is #3 in the depth chart, but they'd much rather him getting starts in the AHL than riding the bench if (lul, really it's a when) one of Frank/George gets injured.
There aren't going to be any better goalies for this role, so might as well go with JoJo.