Sometimes, having shortstacks to my left, and I see blinds are going to increase soon, I stall, just to make sure they will have to pay the higher blinds.
Sometimes that makes the difference between forcing them to shove/call ATC ,instead of being able to wait for another orbit, thus getting a few more chances to get a real hand.
Further, in MTT on the bubble, with a very agressive high stacked bubbleplayer, bullying the table and picking up almost every blind and me not being able to do something about it, I stall to make sure we play less hands so he will get less opportunities to pick up blinds.
Meanwhile hoping the bubble will burst soon at another table.
If I'm the one being able to pick up a lot of blinds, because of the others being afraid to play, obv I play as fast as I can, sometimes even folding to a shortstack (of which I know I'm far ahead in the hand) just to get the bubbleplay last longer.
Being shortstacked at the bubble myself it depends.
If I don't see opportunities to win some scared money I stall.
Unless I see I have almost no chance of making it, even by stalling.
In that case I play it agressive (shove ATC and pray).
Also, often there are players who are afraid to play any pot at all, even against a shortstack, and in that case I will try to pick up some blinds.
In short however, you have a timebank, so use it if the situation requires so.