>>28127453HMs as roadblocks are good as long as you don't go full retard like Sinnoh (though I still like Sinnoh). It's much better than every route gate being blocked by "we're dancing for no reason" or "the power is out, come back later."
Roaming Legendaries are enjoyable. I find it fun tracking them down, whittling their HP, and throwing tons of Ultra Balls at them until I get it. It's a timesink, but there are a sizeable number of people who play bike simulator on this board, which is an even large timesink with less variety since you're on the same route at all times instead of running around the region.
The Safari Game is also enjoyable, especially RSE's Safari Game where you had a much larger control over the enemy Pokémon (Pokéblock throwing to fuck with escape rates based on tastes) than in Kanto or Hoenn. The fact that ORAS cut the Safari Game is one of its biggest sins, not as big as no Frontier but still really big.
Voltorb Flip is the best Game Corner game. It's a shame HGSS cut the GSC games in the northwest, true, but Voltorb Flip was a great replacement.
GB Sounds are overrated because they're inaccurate to how GSC actually sounded.
It would have been better if they only made Z and skipped ORAS than what we have now; we (maybe) would have gotten one good game in Gen 6 due to the polishing a third version always gets, as opposed to no good games in Gen 6.
Zoroark is a cooler Pokémon than Lucario, and it would have been more popular if Game Freak didn't fuck up its distribution so hard.
I skipped out on Pokken entirely for rosterfag reasons and nothing else, and consider this an okay thing to do.