I like your dream. I'm not sure this is a playoff team even with Carr, but if they hit big in the draft and pick up some good bargains in free agency, maybe they can win a bad NFC South. As the roster sits now, I think it's a 7 to 9 win team depending on health.
At any rate, I think they know they are going to have to rebuild the defense starting now which is why I think they hired all those young defensive coaches. So they could take a bit of a step back next year unless they really hit on some young defensive players this year.
But, there is no doubt that if Rattler can take a big leap this off season, or during the season, it would solve many problems for this team and make the future look much brighter.