Not sure you can put a slash between 4231 and 433 they're very different formations. (if the slash was to show that they are two very different formations my bad)
I liked the 433 more than I thought I would in truth, Lallana in central midfield is a stroke of genius he doesn't really have much pace so it's not wasted in central midfield he is a brilliant passer of the ball (very underrated in this aspect infact). I rate his ball control as some of the best in the world (no that's not an exaggeration) so he is brilliant in the tight spaces in a 3 man central midfield. He also is vastly underrated in his defensive work rate which last season on the wing was very high and will become more evident playing in a central role. His work rate will be what makes him a success, if you look at players like taarabt he did nothing to help QPR defend at the start of the season and thus was pretty bad and sacrifised a lot for QPR at the start, then when Mark Hughes arrived and told him to defend once in a while his season started to turn round and he destroyed one team I think it was Liverpool towards the end.
My only concern in the formation is Rickie, not in his ability but the fact he won't score as much which means the fans will get on his back. If the fans can get over this I foresee great success in the future playing 433.
P.S (sorry for the overuse of brackets).
I put the slash in there because players can use their movement to change between a 451, 4231, 433 and even 442 during different stages of play.
---------------Davis-----------------
Clyne----Fonte----Hooiveld----Fox
Guly---JWP---Lallana---Morgan---Rodriguez
--------------Lambert---------------
|
->
---------------Davis-----------------
Clyne----Fonte----Hooiveld----Fox
------------JWP----Morgan---------
Guly---------Lallana-----Rodriguez
-------------Lambert----------------
|
->
---------------Davis-----------------
----------Fonte----Hooiveld--------
------------JWP----Morgan---------
Clyne--------Lallana------------Fox
------Guly--Lambert--Rodriguez---
Fox might be a yard short of pace to get up there but hopefully you get the idea. It's the same team in the same match.We've always been fluid under Adkins and I'm confident we can move on from the 442/424/diamond and into something like this.