If it's Mbappe, Bellingham and Vini like that, it would probably be the three biggest personalities in the team (if not the sport) occupying those forward roles.
It got me thinking, in order for such a troika to work, does there need to be a clear, established hierarchy among the players? If so, is that something that should be mandated by the coaching staff or developed organically as the players figure it out?
With MSN and BBC, each troika consisted of exceptional players, but there also seemed to be a clear hierarchy because of the quality of Ronaldo and Messi. In each of those groupings, there also seemed to be players more naturally inclined to taking a more subservient role. With BBC, Bale just seemed rather chill and Benzema crafted his game to maximize Ronaldo. With MSN, Neymar was younger and Suarez was a workhorse.
MVB are all big personalities with similar age profiles and they all like freedom, so it'd be interesting to see how it plays out.