I agree, LCB. We've tried 4-3-3 a few times over recent years. It can become 4-5-1 too easily, which is fine if you're looking to counter-attack away from home, but a bit negative for a home game.
It can be very effective away from home if there is pace and movement in the front three, but it's never really seemed to suit us at home.
That could be more to do with the players we have had available rather than the merits of the formation - how often have we had 3 midfielders good enough (and with the stamina) to play in a 3 man midfield, or 3 forwards good enough to be an effective front 3?
If it's going to be our favoured formation, at least we can sign players accordingly - Holdsgrove looks as if he can play on the left of a front 3, and Semple seems to be doing OK as well; Newsh could play that role as well, but the middle man of the 3 really needs to be bigger so he can be used as a target man for the others to play off - can Mikel play that role?
We need at least another 2 midfielders, and if we can get players who fit 4-3-3, no reason why we shouldn't give it a go, as long as we've got plans B and C ready for those games where it doesn't work.