Hehe, that's only boring if you've no deadline to meet - really most of my games have been for competitions so there's been the desire to finish in time. It's pretty useful to have a deadline, even if you know you won't make it - your more likely to at least try and make it. I know what you mean though, I've had a 99% complete game rotting on my HDD for about 3 years, it's like I just don't enjoy it enough to put in that last couple of days on it, there's always something better to do.
I think it would be cool if any game project finished get's mentioned in the newsletter, maybe even a review or something if it's warranted. But having that as a punctuation, once you get your game done it ends up there, kinda like employee of the month, but for games, and basically any finished game should be featured. I can feel the cold bat-stare from Batvink as I type this.
My point is that it's tough to promote a game, so most people don't bother too much - finishing a game project should be something to celebrate, it's a great buzz, which I think should continue after the game is done. This largely happens already, but if it was official, like if you submit your program announcement it'll be listed in the next NL, I think that would encourage people to see it through, maybe even get a bit competitive with it. Knowing that people will at least play your game is a good incentive, knowing that your game link will be made available to 10,000+ people is incentive too. I think I'd be more likely to play them all if they are listed, whereas a program announcement can easily be missed.