I like the Gillibrand nomination except for the gun control issue plus the fact she leaves a seat for a GOP takeover. I might have selected Nita Lowey.
I posted a while ago an analysis of how the other GOP seats the Democrats would eliminate in 2010 would all endanger existing Democrats significantly. While the GOP might gain a House seat for a couple years, that seat will almost certainly be eliminated unless the Democratic Chairman of Saratoga County or whatever proves to be an exceptional political star.
Gun control issues coming up, should there be any, in the coming years will not be "hunting" issues, expect Gilly to vote straight liberal Democrat on all gun bills.