I think it's a good point about the GM position. The truth is that if Loomis moves on/is fired/ is promoted out of the GM role, etc. the most likely replacement is someone that is already with the team. That likely means either Khai Harley, Dave Ziegler, Randy Mueller, or Jeff Ireland would get the job. Maybe they would do a better job, but none of them would be the type of complete overhaul that many are calling for.
I do think Mueller would be an interesting option if only because he felt like he was starting to build something here before the Haslett fiasco cost him his job. He wasn't great in Miami, but he always felt like a guy who could identify talent and knew how to best use the draft. He also seemed to value adding draft picks though I will admit that I haven't looked closely as how many trade downs/trade ups he has done.
But, whoever it would be is going to be someone with a lot of NFL experience because I think Mrs. Benson and Dennis Lauscha place high value of being able to hire a GM with experience that they can just let do his job without having to be too involved. They aren't going to hire the next hot shot young GM. They are going to hire someone with years of experience doing the job.