Well, after my "ticklish set" hand, I began thinking a bit about making some loose raises myself under certain conditions.
Here are a few candidates, one of which I had tonight:
1) There are a lot of short stacks at the table
2) The table is too tight.
And, here's the plan at a 2/5 NL table: Basically, stick with tight hand selection, but raise to maybe $20 routinely on any playable hand. Then, just play the flop completely as normal--absolutely no difference from a limp.
The basic idea would be to price the short-stacks out of seeing the flop on anything really worthwhile (I can play my suited connector for a raise with full buy in, they can't).
Basically, this is a partial imitation of the loose LAG I was talking about in my recent set hand. What I think the real effect of this move is is to turn a low action table into a table giving a lot of action as well as making it much more difficult for short-stacks to stay in the game. It just seems to me that, while you're effectively ignoring the true blind level (in a sense, you're making a 2/5 table into a 10/20 table), you put enormous pressure on the short-stacks this way.
What I'm not completely sure about is then when exactly you want to downshift again. But it also should create some opportunities to make bigger raises on true raising hands and still get callers.
Anyhow, this idea is for me very much in the experimental phase. So, I'd be interested in hearing any experiences from anyone who's tried it. I tend to view it really mainly as a kind of provocation move with limited risk.