Well that's what getting Lincecum would do. If you make your already mediocre line-up slightly weaker for one year, it's worth it if you have a guy with ace stuff for years to come. I'd count that as a "substantial" acquisition.
I'm not saying acquiring Lincecum wouldn't be a good thing, it would be great, but 2007 was the year to take 2 steps back. To do it two years in a row, is cheating (and lying to in a way) the fans. With where the Nats farm system is right now, there's no need to give up 2 or 3 regulars to get a potential ace, we have some in the making already. Let them develop and acquire players that can 1) get the job done now 2) lead by example 3) have the ability to help/teach younger players. It's very rare that a stopgap player can do any of those 3 things.
But really, I was trying to demonstrate my willingness to give up almost anything to get Lincecum. In reality, I'd like to see the Nats trade Kearns and get a major outfield signing to more than make up for the loss.
I'm just as up to getting Lincecum as anyone, but I'm not willing to "pay the price" by taking those steps back "2 years in a row" The best thing that could happen in the way of signings, is that the Nats sign someone significant, so that other better quality free agents start looking towards Washington DC and a potential place to play.
I know the idea of trading Nick Johnson was half-assed considering his injury history, but I do wonder if the Giants would be interested in Josh Whitesell. He's Nick Johnson in the making without the injury history, and he's about 4 years younger.
If Josh Whitesell doesn't figure in the plans of the Nats (a 4th place team) why would be interest other teams, unless it was to help file their minor league rosters. There's no guarantee Johnson will even be ready when the season opens, but I think fans wouldn't protest all that loudly if he was traded.