I can think of a couple light and wider 700C rims available in 36-hole, but the prices ($85 and up,
each) probably don't make sense for wheels you only expect to ride for a year. I invest my dollars and time in "keeper" wheels that I plan to use for a long time.
It seems to me that there are still lots of options for 36-spoke wheels, so I wouldn't let trends or fashion alone dissuade me from building up more of them. It's not as big a deal for the front wheel, of course.
BTW, "ID" stands for "inner diameter" and isn't the right term to use for the inner
width of a rim.
