True. But I mean more towards his Force displays. He definitely doesn't need (and shouldn't) to be a god, but come on, he has come across as weak-sauce way too often.
Yoda was revered as one of the most powerful Jedi, however not god-like. His portrayal is one where his Force performances are awesome to read...every time. They could do the same for Luke, without making him invulnerable.
Like with Lomi Plo, do show him succumbing to the doubt, but have him use his mastery to dissipate her cloak rather than having to 'eliminate his own doubt.'
Or with Caedus? Luke should have grown a pair and gone after him. Would have made for a far more awesome battle than Jaina v. Caedus (though that wasn't bad).