In the Big Ten, and especially in Iowa's place in the world, there's zero, and I mean zero, chance that going to an RPO guy would work. You'd end up with Adrian Martinez 2.0 and it's one of the reasons Frost can't make it work there. You'd have a guy who can't throw worth a F who's injured all the time and worthless as tits on a boar.
Get a guy who can both run and throw you say?
Well, there are teams that're able to do that and they're called Clemson and Alabama. Any QB who's good enough to fit that bill is going to the SEC/ACC for a top 5 team, not Iowa. Play action is what works here, and we can get recruits who are good at it. Iowa would be getting sloppy thirds and fourths in the RPO quarterback market; don't screw it up by trying to ram a square peg into a round hole.
We've proven we can recruit and develop elite OLs more often than not and we crank out early draft picks like clockwork. Along with TEs who can block and catch screams pocket QBs. People wanting some Lamar Jackson wannabe scrambler type couldn't be more wrong.
I agree it would be nigh-impossible to get an elite dual-threat guy, and we can take advantage of a market-inefficiency and get a pro-style guy that is better than would have been available to us a decade ago.
However, Tanner Morgan in Minnesota has shown you don't need to be an elite dual threat QB to be very successful with RPO. Minnesota had the 7th best offensive efficiency in the nation last year and were essentially tied with Wisky for 2nd best in conference behind OSU. We'll see how they do now that Johnson is moving on to the NFL, but what they have up there seems real. As long as refs continue to let OL get 5 yards down field on passes (even though the rules say 3), and you have a QB who is a great ball-handler and can make quick decisions and deliver accurately, RPO is deadly.