Nice to see the first page of this thread being regular posters saying what one could have written as their opinions in advance!
As for the dilemma, its hard to get too exercised over retaining either.
Holland is a GM with an excellent track record in recent years, and there is no reason to suggest he would be bad at a rebuild, now he has started to embrace it. However, it seems unlikely that he will be here all that much longer, and most organisations benefit from new blood near the top from time to time. It's all a question of what other younger and potentially better candidates are available.
Blash? He's a below average NHL coach on all evidence to date. Most players have regressed under his stewardship, or at least stagnated. Just when there seems to be some cohesion to his work, we have one or two bad results and he starts making changes for their own sake. I have sympathy...he's got his dream job at a bad time and is desperately trying to keep it. But he's given no evidence since leaving GR of being particularly convincing strategically or effective in the short term. BUT, and its significant, he is currently coaching us to a better pick than this roster should get.
I think both will be gone in the next couple of years if not by the end of this summer, but if I had to keep one it'd be Holland, simply because we are starting to have enough good young players (particularly after the coming draft) that we need a coach who can provide a more stable and coherent development environment.
I actually hold KH in higher esteem than most, but that doesn't mean I think he should be wings GM for any longer than it takes to find a convincing candidate ready to buy into the organisation's draft first strategy.