I'm still looking for my ideal mix of utility, durability, comfort and efficiency in a road bike... but I'm getting close. The most recent changes to the Trek include switching back to the straight bar/Ergon grip combo and the addition of a 1x9 drivetrain from random parts I had sitting around. I did end up buying an inexpensive 9-speed chain, but that was the only money spent on this set-up.
The Ergon grips are comfortable, and the small bar-ends provide a hand position that's (somewhat) similar to riding in the hoods of a drop bar. It's a good thing I like the flat bar set-up, since the shifter I'm using is a Shimano trigger shifter that only fits mountain bike diameter bars. Even my road bike looks kind of like a mountain bike...
It was a beautiful day, so after the changes were complete I explored the trails on the St. Paul side of the Mississippi. Once again I was pleased with the ride of the 37mm Conti Travel Contact tires (you can see their reflective stripes glowing from the camera's flash):

One of the biggest drawbacks of the 80's Trek frame is the nearly complete lack of braze-ons... it has fender eyelets front and back, and that's about it. The absence of water bottle mounts is the biggest issue; which is one of the reasons I made the frame pack pictured above. It doubles as a shoulder bag when off the bike, and fits most everything I may want on a ride - extra jacket, a large water bottle, a few tools, a pump, and the air reservoir for the obnoxiously loud
Air Zounds horn.
A couple days ago I came across a cool little thing made by Paul Components... a light mount that attaches to a frame eyelet. Cool idea, but not worth $23.99! I made my own from a long Allen bolt, a few washers and a 1" section of handlebar, and mounted it on the left fork eyelet (the large washer on the end prevents the light from sliding off to the outside):
On a road bike I like the handlebars narrower than a typical mountain bar, which makes things a bit tight on the handlebar... wide grips, brake levers, shifter, a light and a horn take up most of the available space. I used cross levers instead of mtb levers - the cross levers have a 24.0 diameter clamp - so I can run them further to the inside (where the bar starts to bulge out to the 25.4 clamp area). I also installed the computer mount around the headset locknuts:

The advantage of all this clutter is that everything is at my fingertips (except the computer). Who knows... maybe the Titec H-Bars will make their way over to this bike someday. I could see a pair of Titec H-Bars (or J-Bars) that were cut a bit narrower being a good fit for this bike.
Someday I might be able to afford a new frame, or even a custom frame (maybe even custom handlebars!?)... but until then I'll keep trying to piece together something good on the cheap.