Meh, Wade is s*** and Bosh has regressed with LeBron. Even if they get Lowry, that doesn't change the dynamic all that much. San Antonio has shown us the importance of depth. I don't see how they're gonna upgrade their biggest weaknesses, their lack of a quality big and a decent bench.
San Antonio is basically intact, they are a much bigger threat to repeat than the Heat to be top dog again. Also, let's be honest, San Antonio should've won 2 years ago and this year they blew Miami out. The Heat aren't that good once you get past LeBron, they wouldn't have had four straight NBA Finals if the East wasn't total garbage.