Back in 1971, the Oilers drafted QB Dan Pastorini of Santa Clara in the first round. Two rounds later, they took QB Lynn Dickey of Kansas St. When asked why he took two QBs, the GM said they needed two guys and Dickey was "the best player on the board". Pastorini was the "tools" guy of the two who could throw 70-yd bombs and even served a few years as the punter but he took a terrible beating behind crap lines.
However, it was Dickey that suffered a career-threatening injury in a mop-up role and was out an entire year. A few years later when the Oilers suffered through a 1-13 season, it was Dickey who QB'd their only victory, a win at Baltimore. That was enough to send Dickey to Green Bay where he flourished for a few years as the starter. Pastorini stayed in Houston through 1979 and went to two AFC Championship Games (both losses in Pittsburgh) before he was traded to Oakland and wiped out in a speedboat accident, ushering in the Jim Plunkett Era for the Raiders.
The point in all this is that Houston got value out of both picks. The Broncos have already made their money's worth out of Siemien who was probably never thought of as more than a backup until he got the opportunity. Personally, I think Kubiak designed a passing game to hide TS's shortcomings and the league has now had time and tape to figure out how to beat him.
I'd prefer to shore up the o-line and go into camp next year with Lynch as the starter until he plays his way out of that spot. Lynch has a stronger arm and better mobility. He just needs to sharpen his accuracy and do a better job of reading defenses. Perhaps an offseason at a QB camp or two will help him a lot. With Trevor, I think we've seen his upside.
I miss the old Mile High Stadium.