It’s hard to tell. If flexi-wings are banned it will tighten the front of the field up a bit yes, but that isn’t the only thing that makes Red Bull and Ferrari fast (though it does appear to be a decent part of it) and McLaren have still yet to really understand the EBD from the looks of things. Also corners like Pouhon, Fagnes and Stavelot will still benefit Red Bull.
I don’t know if the weather necessarily plays into McLaren hands – they have two of the best wet weather drivers yes, but in Australia and China Alonso’s Ferrari was also quick.
Things will definately be closer though I reckon – could be a Turkey type race, but with Ferrari in the mix as well. Add in a possible surprise like we had last year from Force India and I reckon we could be in for a cracker.