I wondered when they would start exploring this end of the Beltway. Our district's past member of the Board of Supervisors, Dana Kauffman (two supervisors ago now—he was succeeded by Jeff McKay around 2007 or 2009; McKay is now Chairman and Rodney Lusk is the new supervisor), used to call this end of the Beltway the "forgotten portion."
It seems to me that converting the existing "Thru" lanes on the Beltway entirely to HO/T would massively defeat the purpose of the way the road is designed through that area. Segregating the local traffic that's exiting and entering from the long-distance traffic that just wants to pass through the area was a major motivation for the current design. It still backs up heading to Maryland in the evenings even with the new design, although the backups are far less severe than they used to be. (Once upon a time the backups would regularly stretch to Van Dorn Street. That seldom happens anymore unless there's a wreck.)
If they decided to proceed (and I have little doubt they will), I'll be keenly interested in how they configure the interchanges and other connections. The Van Dorn Street interchange could use a rebuild anyway, so maybe this will provide the opportunity to do that. It's only had two significant changes since it was originally built in the 1960s (the wider Beltway doesn't count, IMO, because the basic interchange design didn't change)—at some point a new ramp was added from northbound Van Dorn to the Outer Loop to eliminate the need to wait for a left turn, and at some point an "authorized vehicles only" ramp was added to access the salt dome on the Inner Loop side (I used that ramp once to look at new signage waiting to be posted, but there was a cop there so I had to leave quickly). The big problem with the Van Dorn interchange is the exit to Van Dorn—the ramps from both loops merge and traffic has to criss-cross in a relatively short area depending on which way you're going on Van Dorn.