Markstrom still has to prove he can shoulder the load. Bob's already done that. So... I do see Tallon picking up a young G.
They're probably not expecting to make a cup run this year, so they can afford to lose some game evaluating what they've got in Markstrom. Besides, when Bob got his shot and proved he could handle a decent work load, he hadn't proven it to that point either. At some point Markstrom has to get his shot, and when that happens he will be an unproven goalie.
I agree the pressure has to be off of Bob. He can get in 20 or so games and I'm sure he will improve in all areas with Bryz as a mentor. In a year or 2 we have a real nice problem, if we can't keep Bob just think what we could get for him.