It depends what you are doing with the bike.

With my mountain bike, it has a super short rear triangle and a raked out front end. This is awesome for downhill rides and putting the power down to the wheel in the back. Steering is a little slow, but that is due to the length of the fork, and not the weight being over the rear wheel...

The downside is that on steep climbs, unless I move myself forward, the front end loses grip and in really steep climbs actually wants to come up...On a road bike however, I dont think this would be a huge issue...mountain climbs tend to be a little steeper in some spots than road climbs.