Retaining Bosh keeps Miami in the mix for the division title. The move looks good for the next couple seasons, as the Heat don't totally implode and let them stay relatively competitive during Wade's twilight years. If they can pick up Luol Deng, they could actually return to the Finals! However, this reminds me of the Ra$hard deal, which worked out for the first couple seasons, before paying $24M to an aging 4 who only shoots threes caught up to them. Maybe the 2017 CBA/lockout will give them an Amnesty clause to use on him...
It does however, ruin Houston's off-season. Trevor Ariza is a good player, and 4/$32M is a good deal for his talents, but it means they'll have to mostly play Parsons as a stretch 4 (if they keep him) and he sucked during his first Rockets stint. So if making Houston worse was Bosh's intention, he succeeded.