It is great for someone like Jozy who tried the prem and failed miserably. He's not a prem league player, would two years in france make him one? probably not. So he brings his name recognition home and bangs in goals against people making 40k per year. big deal.
Other players, however, it is damaging to try and lure them back with big money. Do we know Ale Bedoya's ceiling? If he has another good year in France next year, wouldn't you like to see him try the EPL? If he is lured back with a 5mil/year contract that is bad for the mens team. If rubin, John brooks, bobby wood follow the money and come to MLS, will they ever get the big league promotion? Doubtful since they would need to take a significant pay cut to go over there if we keep overpaying.
I feel differently about Mix since MLS is a step up from tippeligaen. Ill be happy for him if he moves up after a few years here.
Michael Bradley is a perfect example, the guy was challenging for minutes in Italy, and now is in MLS. I'll be stunned if he moves abroad, for a paycut, ever again. He could have been playing in the big leagues, but hes not. Not good for MNT