Haha, well I'm kinda both in that regard.
I want more new skins/heroes. I just assume whoever does that isn't involved with the actual inner workings of shit like implementing bans, spectating, tournament info into the in-game client, balance, etc. I assume they are separate groups of the team, kind of like how a forward and defenseman have the same goal in hockey (to put the puck in the net) but they have different responsibilities to get to that point.
What you said is my inclination too, though...I don't think he'd have mentioned it so openly if it wasn't nearing completion.
The thing that boggles my mind is how they've been working on it all this time and it still hasn't been implemented. I'm no developer, but it seems like however they built "hero league/ranked play" they would've left the room for a possible need for ban implementation from the start to make the transition smoother and that the whole process shouldn't have taken them something like 6-8 months now.
Then again, they were so deadset against it I suppose it's possible they were like nah, fuck it boiz and left themselves no out so they DID have to rebuild the whole system. If it's taking this long because we're getting a completely reworked hero league UI (which it needs, IMO, at least with the stupid tabbing through pages to pick heroes) and potentially reworked hero league period - bans, grandmaster, the works all at once - then it makes a little more sense.
That's kind of the SWTOR development problem all over again, though...just release this shit in stages and not save it all up for one big drop. By saving it all up, you are killing the buzz for your game.