Fair points mate, but im not sure im joining you with them. I think Theo doesn't have the return to justify being an inside forward, you need potential for double figures in my opinion to justify - Mordor do it quite well. Theo for me, biggest asset is pace and ability to get in behind in space on the break, or stetch a back four or get it on the back foot on the break, not sure hes much use in congested areas or has the composure to pull of the position. not to say we couldn't recruit there at right inside forward though which we probably will.
Iwobi for me, is a link man, quick ball, triangles, penetration in congested areas, not sure he has the engine to hold a role centrally that would carry him, for me hes fitting at 10, or an option at inside forward as a sub, he hasn't nailed a starting spot and is competing for a place in any of those positions - i think its tough competition to, as i wouldn't put it past Gylfi to have a double figure season at 10 or Gordon to break out there ahead of him.
To be honest what i have seen of PEH and Gbamin, they both strike me as 8's good engines, box to box with a bit of presence and PEH in particular able to break play, while Gbamin looks an out-muscling unit ironically. I dont see either as a 6 and id like one - maybe im old fashioned but i think a dedicated 6 like say Carsley, Reid of Gueye, gives us a balance. Id be open to an accusation of old fashioned thinking on that though.
You are probably right 4-3-3 probably suits some of the players we have at the moment in box - box players in central midfield, i also think it disenfranchises some others though to and leaves us with a player over hang that dont fit. The window will tell us a lot in terms of in and outs. If we get say Allan as well and you could see some others being surplus. Be a pick of PEH, Gbamin, Allan, probably Gomes - that leaves Davies and Delph kind of no mans land, which is why i think PEH might be our lot in central midfield.