The loot grind finally feels (more) fun and rewarding.
When the update hit, I was kinda pissed about the fact that everything (especially the raid) gave me only incrementally better gear, but I have grown to love it. It's a much better carrot-on-a-stick, especially now that you have more sources, better loot, and can infuse without loss.
Last night I was ready to go to bed and wanted to do a couple of patrol missions & bounties to get a Vanguard rank-up, ended up doing that with all my three characters and finished at almost 4 AM.
I hope that they only keep improving this with The Taken King 2 and beyond, not regress to the disappointing rewards and slow progress of old times. This current state of the game is one where I feel I could take a break from the game (although I don't want to) and leave happy, like they always said that's what they wanted.