I think the hand itstelf is plenty interesting. There could be an argument for raising pre. I mean you have a big stack and by raising, you may iso the utg limper that's prob weak here most of the time and have position on him if he limp/calls. And by limping behind, you're basically telling the table, I never have a gd pp here or gd b'wys. By raising, it helps widening your ep raising range that might come in handy later when you have a premium in ep. And you can safely fold to a 3 bet bec I don't think this hand plays well if oop vs someones re-raise range. Plus it helps you take down the pot on the flop after taking the pre initiative by raising pre.

I guess limping behind is not that bad, but I really hate limp/folding. And if you limp/call a hand like this, I think that's very bad oop bec then u may get involved in a neg reverse implide odds situation or a spot where you're chasing a flush draw oop without the initiative.

As played, I don't think betting this dry flop when ch'd to is very bad at all. You have a back door fl and str8 where you can expect to see alot of gd turn cards. I think u would take down the pot a large % of the time  and if I was called by anyone here, I prob would bet any turn card ip bec if anyone did ch/call then ch/fold the turn, it's pretty apparent they had a weak chasing hand. And I would make a note on that player for possible barreling opportunities later.

I think I would use my position advantage and bet the turn as well. Plus you now know that no has the As and you would have the 2nd nut flush if another spade came.

I think you should make your raise a little bigger on the river because you just showed the table you minraised the river with a very strong hand. Would you ever use that sizing without a made hand? 

As it turned out you won a nice pot bec the flush came, but most of the times that's not going to happen. If a spade didn't come on the river as played here, you would have to fold to almost any bet meanwhile, you never used your position advantage and decent equity in a pot that nobody seemed to want.