69Q Hobby Broadway Harrisburg Quickline?

Looking at METRO's map of the coming light rail East Line, I see two things.  Hughes street where exists the infamous railroad crossing that precipitated the need for an overpass or an underpass (and all the drama that has ensued) is far enough east on the rail line that the long building of what will be the overpass will not affect that much of the route, and I have to wonder if METRO will build a temporary terminus at the Altic / Howard Hughes Station and open that part of the line later this year as scheduled.
I'm not sure if this is possible, but I cannot think it has not been talked about, and this map seems to imply METRO is at least thinking about this.  Hopefully, a temporarily-shortened East Line will come to pass, ending at Altic / Howard Hughes.

Which brings us to what to do between Altic / Howard Hughes and Magnolia TC.  Easy-enough: extend the new 69 Broadway to the temporary end of the East Line.  It will take 2.5 years to build the extension to Magnolia TC, which means the 69 will serve Altic for quite a while.

However, I almost hope East Line will not go online until the Hughes street overpass is done.  This will give METRO a chance to introduce people to Quckline service.  In lieu of light rail service, put in the 69Q Hobby Broadway Harrisburg Quickline, starting at Downtown, replicating exactly the stops the rail line will make, and then making the trek to Hobby down Broadway.

The 69Q will introduce a lot of people to the wonders of a Quickline service as well as provide a real mass-transit option for people getting to Hobby Airport.  And if it turns out ridership is not so great, METRO can make adjustments accordingly.

In the cost-conscious culture that is the 'New METRO', such a move entails an amount of risk, but let's make silk out of the sow's ear that the Hughes St. railroad crossing has become, remedy the lack of an East Line, get people to Hobby, and offer to the burgeoning east of Downtown a mass-transit option it maybe has never seen before.