Very good post and I I can't dance with any of that.
What I will add is that even though Lo Celso is adaptable I don't think he has blistering pace, he's not a quick winger in the mould Mourinho so often has had success with in the past and has preferred so far with us, though only over two games.
If Mourinho sees our future as one with two truly fast wide players that opens up some selection headaches. That leaves two positions for creative players without blistering pace. The roles Winks and Alli have filled so far. Assuming he'll want one more designated defensive midfielder in the side (Dier so far).
We have a lot of players for those two positions. Winks and Alli that have filled them so far. Eriksen that came on in both games though he may not be an option for much longer. Ndombele who most think will make himself an automatic starter. Lo Celso, Lamela, possibly Sissoko though I personally find that unlikely.
Now, Mourinho might change things around. If not it will be a real fight for those positions, I can't see Alli losing out. Will it be between Ndombele, Lo Celso and Winks for the other one?
There will be injuries and rotation, but I struggle to see either of Ndombele or Lo Celso happy with being a backup slightly longer term.
Some big decisions for Mourinho, and like I said we should have course see a change of approach.
I I can't dance with that, either. I will point out that Mourinho's classic Chelsea side only had one really 'pacy' player, in Arjen Robben. Damien Duff flitted in and out of the side for a while, but the one folks most remember looked like this...
............Drogba.............
Robben--------------------Cole
-------Essien----Lampard------
------------Makelele------------
Gallas---Carvalho----Terry--Ferreira
------------Cech----------------
Additionally, the classic Inter side that beat Barcelona 3-1 looked like this -
------------Milito--------------
Pandev---Sneijder-----Eto'o
------Cambiasso---Motta----
Zanetti---Lucio--Samuel--Maicon
------------Cesar-----------------
...with only two particularly pacy players in Eto'o and Maicon, although Milito and Pandev were quick (not pacy, but quick).
I think Mourinho's hallmark is adaptabilty, more than pace or power (as is often attributed to him).
I actually think our squad has more pure possibilities for tactical combinations than either that Inter side or his Chelsea side of 05/06 did - the only side he's managed that had more possible adaptations was probably his Real Madrid side. For us, there's loads of possible combinations he can use, particularly in midfield.
For what it's worth, I think two of our central midfielders will miss out. One will be a holder (Dier/someone else), and then there will be up to three positions for the others (one deep-lying player alongside the holder, the No.10 role, and possibly a playmaker from out wide like Joe Cole or a utility player like Pandev).
Dele is pretty locked in, I think - he's got the grinta Mourinho likes. The other two potential positions are up for grabs between Lo Celso, Ndombele, Winks and Sissoko.
And I think the latter two will end up losing out in that fight, unless Mourinho has a plan for even more central midfielders in mind (which is possible - if he plays a back three, he could conceivably drop Dier into the back line and fit four of the five into midfield in a 3-4-2-1).