I think the SO record you mentioned is going to be broken. The stats you posted with it for Thome and Dunn make it seem almost certain.
As far as the HR and XBH record, a couple seasons ago I would have been convinced that A-Rod would eventually break them, but considering how he has played and how injury-prone he has been of late, I'm not as confident anymore. Regardless, I think the HR and XBH, as well as the RBI and 2B records, will eventually be broken. None of them are untouchable given enough time, I think.
That goes for DiMaggios streak as well. I think it is going to be tough to beat, but I think it can be done.
Ripken's streak will never be beaten with the way the DL is utilized these days, and nor will Young's win record for the same reason, along with the increased use of relievers compared to the early years of baseball.
The record I am interested in seeing broken is the HR record, just because I would rather have anyone but Bonds be the champion. Hell, I'd rather see a Yankee have the title than Bonds.