Indeed. I used to be able to take CO mainline CLE-BOS (and sit in First sometimes for cheaper than coach) which was offered at least once a day until the drawdown, when it went all ERJ. That ended in March, and now DL has picked up the route, with JetBlue still flying it. Mainline CO flew to LAS and PHX year-round once upon a time and seasonally to places like MIA, SAN, etc. It is nowhere close to pre-merger levels. That said, it's better than most spoke cities. In the recent announcement of expansion of Florida flying, United did list flights to Florida from "United hubs" and the flights from CLE to Florida were on the list--probably because CLE is the only non-hub with nonstops to Florida so it sneaked in there.

I personally will take whatever they will offer; the CO staff at CLE are good folks and I miss a lot of them. More flights would be a good thing.