A couple of quick thoughts
Point #1: I agree if you're in position and there are other limpers. Up fron raise/fold with small/medium suited coneectors. Why? They don't have big implied odds in unraised pots. In a raised pot, where you raise preflop, they do.
Point #2: I'm halfway between on this one. In a long major B&M tourney, I'd agree, the the faster the blind levels, the more I'm willing to gamble early.
Point #4: I'll go farther. I tend to go pushbot at 12-15 big blinds, and Snyder says in a faster tourney you should at 20. BTW, if you haven't read Snyder's book "The Poker Tournament Formula" you should.
Back to work.