This year, with injuries to Doug Weight and Mike Sillinger, the "tradeable veteran" pool has quickly dried up. In fact, with Mike Comrie getting traded today, Bill Guerin and Andy Hilbert are the only real names left on that list.
I assume Comrie was traded so early because there was a chance he gets hurt like Weight did (Comrie was already hurt this year a couple of times) and brings his trade-value to Zero.
It should also be noted that Ottawa was the first team to go buying last year, when they were in a slump and make a trade for Cory Stillman from Carolina. This year, Ottawa, on the heels of a 5-game winning steak, thinks they have a shot at the playoffs, so they moved quickly again.
This trade isn't great for the Islanders, to be honest. San Jose's 1st round pick will be bottom 5 (somewhere between 26-30) probably. Yes, Mike Green was picked there, and it's still a nice bargaining chip if they want to trade it on Draft Day to move up, but if I was Garth Snow, I'd have wanted Ottawa's pick instead (I don't know if Ottawa still has it).
I think they could've gotten a 1st round for just Comrie and not have to have given up Chris Campoli also. Granted, that was probably a big sticking point for the Senators, because Comrie won't re-sign there next year (or at least there is a chance he won't) while Campoli is obligated to Ottawa through at least next season as well.
Dean McAmmond is a servicable player. That's my way of saying he isn't bad, he isn't great, but he goes out there and delivers his best every shift. It just so happens his "best" isn't very good anymore - as in 3G, 4A in 44 games, compared to 51 in 73 in 2002. He also has an injury problem, never playing a full season besides the strike-shortened 1994-95 season (81 in 2007 with Ottawa is his most, then 78, 77, 73, and then in the 60s... very poor numbers over a 14-year career). He was hurt during the 2003-04 season with Calgary and didn't play in their run to the Cup Finals that year.
Anyway, I'm not going to sit here and berate the Islanders. They made the move they had to while the iron was hot. Comrie's been playing real well and there is a chance he gets hurt again, a chance Snow couldn't take. I just wish, for Islander fans' sake, that they had gotten a better draft choice and maybe one of Ottawa's few prospects instead of an aging vet with a history of injuries and declining stats.