Originally Posted by
cpach
Why do you think you need to change a lot of things? Fenders are nice for commuting, and a little harder to set up on a road racing bike. Crud catcher makes fenders that will fit road racing tires/frames.
While there are absolutely advantages to wider tires for commuting and many applications, you're probably overstating their necessity, especially over a 10 miles round trip commute. I ride 23mm tires around sort of crummy roads around town all the time, and occasionally for short patches offroad if I feel like it honestly. If you're riding perpendicular to tracks you can absolutely can just ride over them on road wheels/tires. You already have reasonably puncture resistant tires.
Switching to flats or mtb pedals of some kind would be a pretty good idea for commuting, which will cost like $10 for the former and maybe $100-150 total for the latter if you're reasonable about it.
The advantages for straight bars commuting isn't particularly clear. If drops are comfortable to ride 20-200 miles, why not 5? I think straight bars are sold to commuters because they have a shorter learning curve and to distinguish them from road racey bikes, not because they're strictly very superior for commuting. Changing to straight bars isn't strictly very difficult, but you'll have to buy new 10sp straight bar shifters/levers which is a fair amount of money that would be more reasonably spent on an inexpensive commuting bike.
The problem with your bike is that it is significantly valuable. I would consider this a really bad trait for commuting unless you specifically are never parking outside in public. I wouldn't mess with the nice race bike except for maybe different pedals and lights, that money would be better spent on a bike that is more commutery (like a cross, touring, or old mountain bike).
+1 ... I commute on a Defy 3. I have the 23mm continental ultra gatorskins, and keep some SKS Race Blades at home (I only put them on when the forecast calls for rain). Oh, and I have a back-rack (probably the most important thing for commuting, imo). With all that, I'm good too commute no matter how crummy the streets in my town are.