What we ought to be talking about for Wadsworth (and all the other marginal corridors) today is something like LA's
MetroRapid.
It's a little bit of a stretch to call MetroRapid "BRT", but the idea is that for very little money you can build a better bus line with a few key enhancements that make buses faster and easier to use. Maybe a bus lane here or there, but mostly just stuff like level boarding, pre pay, unique branding, and (most importantly) limited stops.
We should be putting MetroRapid style service on Colfax, Broadway, Colorado, Federal, Sheridan, Wadsworth, Monaco, Alameda, Evans, Hampden, everywhere. And we should be doing it tomorrow.