It would definitely be fun, the only thing I would hate is the fact that you'll be criticized no matter what, and every move and every word is put under a microscope. I wouldn't be good with coach and GM speak lol
Yes there will always be a demand for QBs in the nfl, but the supply isn't always the same each year. There's an extraordinarily high amount of QB talent in the 2018 draft and FA pool, one that won't be quite the same in 2019. So Brissett will be a higher commodity then, than now.
Put it this way, now I'm just estimating here, but in all likelihood, of all available quarterbacks in the 2018 Offseason, Brissett is like the 6th or 7th best options (and he's even lower because Cousins and I believe Jimmy G are FAs). Meanwhile in 2 years he'd be Be even higher, and maybe even the best option depending on how he develops and grows his game this year and next.