His transition to midfield is inevitable.
There's a lot of resistance to this idea here but it's only a matter of time before it happens. Once his domination reaches another level in this position don't think many would look back and wish for him to return to RB. In my mind as an 8 once he settles there he's scoring and creating a tons of goals which at least in terms of goals is more than what he can offer as RB.
Especially now that we practically have no goals, creativity and penetration at AM it would make sense to try him out there and if we do find that player we lack now - whether it's Ox or somebody else - we can always push Trent back if needed.
I think your wish to have TAA in midfield is driven by a fundamental misunderstanding of the way we play, coupled by an underrating of Henderson and Gini. If we wanted more creativity there, Klopp would already be playing Ox and Keita every game. But he doesn't.
Why would you seek a possibly small improvement on our 'uncreative' AM for a 90% dropoff in creativity from RB by moving Trent, when our fullbacks are the best pair in world football? The fullbacks do create enough for the system we play - from where they already are. Our midfield move all over, just look at Henderson going wide right late on against Villa, and most importantly, they cover for the fullbacks who do most of the attacking. If you put Clyne in at RB and TAA for Gini or Henderson or Ox, you lose massively all over the park. So unless you have a cloning machine for Trent, forget it. It's about balance. Also - must have missed all those times Dani Alves got shifted into midfield...or were Barca/Juve/PSG perfectly happy to have a brilliant creator at RB?
I think people who want to break up Robbo and Trent are terrible readers of the game, myself. I think Klopp would already be making these moves if he thought it was to our benefit. But...err...he's not.