It is always a risk and gamble.
Burrow - An amazing season! Fantastic arm and composure! Could not win the job as OSU = gamble
Tua - Put together a few amazing seasons! Great kid and amazing accuracy. Who knows if he will be healthy enough to play football = gamble
Herbert - Ideal size, smarts, and arm...but makes stupid throws/decisions =gamble
Rosen - has been practicing with the team and learning all year. Accepted the backup/learning offense role. Was a very high level pick/prospect coming out of college = less of a gamble
Bring in a wild card QB in the later rounds to compete with him. Hurts, Love, Costello, Huntley etc, or kick the tires on a given up on young vet QB (If Tanny can find success in Ten, can Mariota/Brissett find success in Mia?).. But for now... Build the lines, get a CB, RB, and get ready for the next draft.