AFAIK these are the 19 players that you omitted Shabby.
Ciaran O Sullivan, Nathan Walsh, Brian Hartnett, Fionn Herlihy, Eanna O Hanlon, Diarmuid Phelan,
Brian Hayes, Brian Murphy, Paul Walsh, Tadg Corkery, Cian Kiely, Kevin O Donovan, Colm O Callaghan,
Mark Cronin, Paul Ring, Shane Merritt, Daniel O Connell, Kevin Crowley. Damien Gore (Inj)
These are the 7 players that have left the panel for one reason or another and may return later?
Daniel O Mahony, Cathal O Mahony, Sean White, Mark White, Liam O Donovan, Billy Hennessy and Tadg Deasy.
The team to play Roscommon will no doubt be a mixture of your team and a few from the above 19. They might try Dineen at No 10 or 12 and we can see your theory tested?