I'm not claiming to know any more than anyone else who's outside the organization, to get that out of the way. But from looking at the market, there is little, if any, pitching available. So what is available is going to be very very pricey and I don't see the Astros matching up w/ any of the teams who supposedly have pitching to trade, i.e. Cleveland, maybe Seattle, maybe Detroit. And honestly, all the pitching rumored as available is all "If this team is out of contention, they might think about trading player-x or player-y....". In other words, it's all speculation.
This leads me to suspect that if anything, the Astros will start trotting out the young pitchers who could potentially break the majors next year, to see what they can do.
I think Wade, potentially, could flip Tejada before he's able to trade Lee (whether that is because of the no-trade or because of the value he could garner in a trade). Pence is an interesting idea, as they do have some outfielders in the system (none that compare to Pence just yet) but he has value and could get you something back in a trade.
Honestly, rather than blow this up just now, I'd like to see them settle on a lineup and ride it out thru the end of the season. Damn this "win now" notion. It turns into "never wins" eventually.