It's personal preference. I don't think neck pickup tone suffers that much from just a little bit of a move towards the bridge, but others feel different. I have a friend who is a phenomenal shredder, and he wouldn't be without his 24 frets. Then again, a lot of players who stay predominantly in the style use their bridge pickups 95% of the time anyway. Heck, a lot of shredder guitars don't even have neck pickups.
On another note, Carvin reintroduced their DC150 a few years ago due to requests by their customer base. It differed in all the Carvin neckthrus in that it had 22 frets instead of 24. I recall reading on the Carvin message board about how much better the neck pickup tone was since it was just a little bit further north. I don't think they offer the new(er) DC150 anymore though.
On another note, Carvin reintroduced their DC150 a few years ago due to requests by their customer base. It differed in all the Carvin neckthrus in that it had 22 frets instead of 24. I recall reading on the Carvin message board about how much better the neck pickup tone was since it was just a little bit further north. I don't think they offer the new(er) DC150 anymore though.