I can respect you enjoy for option football, I personally enjoy watching surgical QB's like Brady, Rodgers, etc in the NFL, however at the college level I share your enjoyment of the option.
The option offense is not a proven commodity at the NFL level. The speed of the players is much faster than in college. Also teams will always be reluctant to open their franchise QB's up to unnecessary hits. I was personally horrified to see what Shannan did with RGIII, and I'm very interested to see if Harbaugh plays Kaepernick as aggressively as a runner now that he doesn't have Smith on the bench.
Are his fans opposed to a position change? Knowing he's on a team with Brady and Tebow isn't going to see regular season snaps at QB wouldn't want to be able to see him play in some capacity?
This is probably a sacrilegious view around here, but "surgical precision" to me is kind of boring to watch. It's like watching a boxing match where a guy darts in and out landing jabs all through the match and ends up winning on points.
I'd much rather see two guys standing in the middle of the ring hammering each other with punches.
Another analogy that I came up with after reading your post was that watching "surgical precision" is kind of like watching Cirque de Soleil. You oooh and ahh for a while, admiring the precision and the artistry, but after 10 minutes, you start to yawn. I'd rather watch WWE wrestling for a few hours. Fake as ever, but entertaining.
My last point is that you could take Brady, or Manning, or Rodgers, stick them out on a flag football field and they'd still do the same thing with surgical precision. I don't like watching flag football. I want smash mouth football where everyone gets hit.
As for option football, true, it's not a proven commodity in the NFL as of yet. Even back before 2011, we kept hearing about how NFL teams will easily stop the option once they have some tape of it. Most teams couldn't do it. I daresay that if there were some NFL coaches who truly understood and employed option concepts, it would be very difficult to stop.
WRT "seeing more tape of it", the NFL has seen years of "tape" of the I formation, yet they have yet to figure out a way to definitively stop it.
As for the speed of the defenses, well, the offenses are faster as well for starters. The linemen are bigger and more capable overall.
Lastly, wrt QB injuries and franchise QBs, a couple of points. First, last time I checked, QBs do get injured while in the pocket. It's not like Brady was running the Zone Read when he was lost for a season. Peyton Manning wasn't out there running a sprint option. In the playoff game against the Pats, Tebow's injuries came about when he got crushed in the pocket by Wilfork and Ninko iirc. At Florida, his only serious injury came when he was standing in the pocket against Kentucky and ended up with a concussion.
Secondly, let's look a little closer at "Franchise QBs". They are paid so well because there is a scarcity of them. Out of all the QBs playing on the college level, very few have all the tools to be a "Franchise QB". Even fewer can rise to the level of being "elite". Just look at Andrew Luck for example. They were saying that he was the best "NFL Prospect" at QB since John Elway some 30 years ago.
Thing is, there are a lot more QBs out there running Spread Option offenses and doing it very well. Instead of having a $20mil per year QB like Manning, Flacco or Brees, being backed up by a $2 mil per year guy like Osweiler, or whomever is backing up Flacco and Brees, you could have 2 or 3 Spread Option QBs who are very close in talent and ability at a fraction of the price. If QB1 goes down, bring in QB2 without the huge drop in talent or ability.
On the subject of position change, my preference would be to see him play at QB again some time in the future. I'd rather him pull a Steve Young and disappear for a number of years then hit the field behind center in the shotgun.
Now, if the only options are for him to change position or be out of the NFL and out on the preaching circuit ? I'd prefer that he remain in the NFL.