Mo had a great improvement when AlSal became Mo's coach. Mo wouldn't have made the leaps without AlSal. The same goes for Rupp. Both Mo and Rupp have a talent, not the same talent as Kenenisa...but AlSal has maximized their potential with long term planning that gears them to run well years down the road and with the "gadgets" at his disposal. I beleive they wouldn't have made those gains without the "gadgets."
Bekele is a true talent, Mo and Rupp are talented. Who knows what Bekele would have done if he had been with AlSal from the beginning, Jr. running career. That's neither he nor there.
AlSal is a good coach...sound training principals and sound "gadget" principals. He is able to put it all together for the long range plan. He's nurturing the athlete for the long haul of their career. MC (Mary Cain) should have a long prosperous career if AlSal doesn't go astray with his plans, MC running in 2016, 2020,...not her running in a year from now.
Back to Bekele, if the rumors are true about the coaching changes, then AlSal probably declined to keep the best interests of his top runners (Mo and Rupp). In the spirit of competition, it'd would be great to train with a living legend but perhaps the egos of Mo and Rupp would not be able to handle it.
Bekele will test his abilities during his Paris Marathon debut in several weeks. Even though he has great times from the track, the marathon is another beast that not all runners can tame. Viren ran awesome times and had the medals, but that didn't translate to the track. Same goes Billy Mills, 10K gold but didn't run well in the marathon (he did hit the wall during the race of the Tokyo Games but that was due to his diabetes that he was not aware of at the time). Even Ritz...great track times but his times in the marathon have imporved (are they really stellar enough to make him a medalist in any major championship?) but I see him being the type of runner who kept trying to put the square peg in the round hole...tried to be a marthoner when his talent was in track and mostly in XC!
All in all, Bekele would be assest to any coach/training group. I think AlSal should take him in if that ever comes up again. And team members would benefit from the training and learn new lessons of teamwork and camaraderie. Rupp's response about beating them...well yes on the level of Americans vs. Country XYZ...yeah you want to beat them BUT the important thing is to surround yourself with honest people who want to help you better your running, push you into heights of training, and let go of the ego. Bekele in the AlSal camp would be able to do that. National Superstars need humility too and need to learn how to work with diverse populations (a talented Ethiopian that wants to continue to push boundaries of themself and the sport).