C'mon man. I expected differently from you. While I agree with your points, I think you exaggerate them just a bit. Overall when it comes down to Indiana's offense and Miami's offense, you can't honestly say (again non-biasness and hate aside) that Indiana's offense is more impressive and exciting to watch.
Never said anything about Indiana, they are horrid offensively. Definitely worse than Miami.
I don't find Miami fun to watch at all. I've hardly even tuned in for full games since their Big 3 was formed. Unless it's transition, they are downright boring with the number of flops and calls they get on any given possession. Unless he's making some ridiculous play or completely on fire, I've never liked watching LeBron even going back to his Cleveland days. He's just too powerful and basically every drive is either a bucket or a call in his favor. It's probably the same way that non-LA fans felt about Shaq in the early 00s.
When you see pure power just overwhelm, it doesn't make for entertaining basketball at all unless you're a fan of that player or team.