Totally agree Mikey, and a natural formation for footballers who have played in Britain for most of their careers (like our lot) as they've played it since youth level.
It's amazing the snobbery towards it. Yes, football has moved on, but Arsenal with Henry / Bergkamp played a variation of it, and so did Man Utd with Giggs / Beckham / Yorke / Cole.
When in doubt, default to something that simple. If Rooney won't stay up front, drop him and use the infinitely less talented Calvert-Lewin and Niasse. Even Calvert-Lewin and Sandro. Or Mirallas.
Aww, Gylfi can't play out wide? Ok, two wingers in Lennon and Lookman. Dull, not inspiring, but it means Baines doesn't have to labour forward, and Kenny can actually get some cover.
Gueye and god knows who in the middle and try and get a result, get confidence, then be more expansive. We aren't Bayern or Real Madrid, we don't have the players or the point safety net to be in some sort of 4-3-3 wonder formation.