>>1996641This guy is sort of right. People will always argue that theoretically, when calculating power or effort needed to go a certain speed or distance, especially on the flat, there is hardly any difference in putting 10 lg on the rack. This is true.
But it is also equally true that the 'feel' of the bike changes considerably and a lightweight bike can be a very enjoyable ride. Menwhile the daily commuter just gets you places, similarly fast but in a less exciting manner.
Now the problem is: There is no changes you can make to your commuter that will make it handle. To begin with: The geometry is wrong and wont change. Secondly: No matter what you do to it, it will never be light. Go single speed, put a carbon for and bars on etc. and all you'll do is ruin a perfectly fine bike. It's a purpose built machine and compromises have been made in its design. Those are intrinsic and will remain. If you want a light randonneur better sell what you have and get one.