Early days yet, I mean Silva said he wanted to play 4-3-3, yet hes mostly played 4-2-3-1, not a massive difference between the 2 in fairness, but this isnt a tactical analysis thread, its a squad thread.
For this season we will probably mostly stick with the 4-2-3-1, at least until he can get a number 6 hes comfortable with.
Be interesting to see how we evolve in time tho, I mean hes got to try and fit Gomes and Iceland into a team yet, you would assume he would want both playing, maybe if Gomes is what I hope he is he might try the 4-3-3, with Iceland and Gomes as the 8s, maybe Gana as the 6.
But as I say early days and we do have options all over the pitch, I for 1 am very pleased with the squad make up, of course we could do with more quality in certain areas, but at least we have depth in some areas and when everybody is fit we should have people able to come off the bench to change games.
I remember Martinez favored a 4231 in defense that shifted to 343 in attack, with Barry holding deep (in part because he wasn't quick enough to join the attack and remain faithful to his defensive duties.)
The Silva 433* (or whatever the attack actually is) seems to be a 442 defensively, with Siggy and Tosun up top in the "Barry" role (press, but stay close to their attacking positions, since both are too slow of foot to rejoin the attack, and Silva needs them in position). The two wingers and two midfielders are a flurry of energy around these two "sitting" pressers in Tosun in Siggy.
Regarding Gomes, I can see him replacing Schneiderlin but then I guess we need to see what Silva does with the FB to guess what he'll do with the deep midfielder. Richarlison's energy is nice complement to Baines' craft (and I think he'll see a lot of action this year, before bowing out to Digne), but Seamus and Walcott still seem to be settling (although productive for a pair not yet settled)
All in all, it's interesting, albeit a discussion for a thread I can't be arsed to find.