People complaining about this confuse me.
1) I had to suck it up and get over all those directs that took time dedicated to new characters coming to Smash (boring). You can deal with a direct over a new game.
2) If they do a different direct that leaves more time for other games in the general direct. They aren't going to have a one hour direct, so I'd they crammed AC into a general one they would have to shorten other games showing time. Split them up and everyone gets more of what they want.
The issue really is that they just haven't had a general direct in so long.
Imagine you're at a restaurant and you ordered a pizza. You've been waiting for your pizza, for over hour, then the waiter comes out and gives everyone at the table water.
It's not like the water is actually making the situation any worse, but it would still somehow piss you off.