Nothing beats game experience, no way should Rodri be sitting out. The league is as good as done and dusted, even if we were good enough to get back and win it, we wouldn't be allowed by PiGMOL/VAR.
We should be preparing for next season, giving the likes of Garcia, THB, Angelino, Rodri, Foden, Jesus and Doyle as much game time as possible in the league. Maybe not all at once but as long as we're comfortable in the top 4 there's no harm.
We saw the benefits of sticking of players learning Pep's style and systems with the Centurions season, that wouldn't have happen if the likes of Fernandinho, KDB, Silva, Aguero and Sterling hadnt had the opportunity to learn the system while playing in it. Pep was slaughtered for sticking to his guns and not reverting to a pragmatic, more defensively minded system when we were getting fucked 4-0 at Everton and Leicester etc. but it was done to prepare players for the season after.