Football is all about balance and blending of different qualities
A mid trio of Thouameni-Camavinga-Valverde is a highly un-balanced and dysfunctional md
They possess as a trio too similar (if not identical) qualities and they would be lacking a lot in what they don't possess:
great defending, tackling, pressing, energy, intensity, constant running, breaking good in counters
and then totally lacking dribbling ability (especially in crowded areas), passing in close spaces, vision, technique
Imagine Madrid circa 2026 with the above md trio and an attacking trident of Vini-Haaland-Mbape , where the best of the trio in technique and dribbling is Vini and the worse Haaland.
It would be a purely counter-attacking team that kills on the counter, waiting to exploit spaces in behind, and then completely ineffective against low blocks.
That would be a transition to a quite different team from what they have been the last decade especially with that md