Apologies that was a typo. I meant 5-4-1/5-3-2. 4-3-3 isn't an option in my view as we just don't have the wingers at our disposal with the exception to perhaps Giles. There's a question mark over whether Jobello could meet the standard required at this level even if fit and both Hillsner and Kastaneer are unlikely to feature anytime soon. The box formation is interesting and something that would accommodate our midfielders well. It would also give the full backs license to go forward. The only issue would be that we have wing backs, not full backs.
As I've previously said, the formation wasn't the primary issue with us conceding goals - it was a factor but it wasn't the overarching reason. Agreed. Although I like him, I personally can't understand the logic behind recruiting Walker. We obviously needed another striker, but Walker is as you say a poacher. Given the way we play it would've made far more sense to recruit a player in the mould of John Marquis (but not him as I doubt whether he would be able to cut it in the Championship). Walker is quite similar to Godden in many ways, just more athletic.
Personally I think it's difficult to include Norwich in your argument. By my count they had over 13 players out injured including all senior strikers. It was still always going to be a tough game but that certainly provided us with a significant advantage going into the game - especially as their main attacking threats didn't feature. I think this is probably why Robins reverted back to utilising wing backs. I do think two up top is the way forward though, as seen in previous games launching balls up to Walker with no support only serves to gift the ball back to the opposition. Walker has a knack for picking up second balls quickly and chasing down flick ons, so a pairing of him and Biamou is certainly the more logical option moving forward.