Thankfully, most of the time, Delta has given elites who are either by choice or by force “upgraded” to Comfort+ seats the option to choose a better seat somewhere else on the jet like an exit row or one with much more leg room. This can especially be important on sub-350 mile flights now that service from flight attendants on these legs can be all but nonexistent anywhere other than in the 1st class cabin.
But I have a big warning and reminder for you. Once you have self downgraded to your preferred better seat the Delta IT machine by default, most times, does not auto re-select you for a chance at a real 1st class upgrade you had by default before the seat move. Shocking right? Well, maybe not so much. 🙁
The point is after you have confirmed your seat, then go back to your reservation page on Delta.com and scroll down to the bottom of the page and make sure you once again choose that you DO want a shot at a real 1st class upgrade even though you are now not seated in the C+ section of the jet. – René