I would keep Wane. 100%.
I agree the attack has been terrible but lets be honest, we still have a huge number of players out and the players we have back have had hardly any time to gel. Can anyone tell me how many games we have had first choice 1, 6, 7 and 9 on the pitch (replace 9 with 13 if you want to ignore MM)? Also Wane has acknowledged he needs fresh ideas, that will come in the shape of TL next season which will make a huge difference in that it will either make Smith buck his ideas of or replace him with a better player.
On the positives of this look at the age of the kids in that squad, Dom 22, Williams 21, Bateman 22, Oli 19, Sutton 20, Tierny 21, Bretherton (20 i think?)
The defensive display on show by these young lads has been nothing short of incredible, they grew up playing for Wane and i don't think anyone else could bring that out of them. Look at Leeds and Hudersfield and how they coped with injuries.
With all this in mind just think how many games we would win with no injuries and TL improving our attack. I still think we have a chance in the GF if we get some bodies back (be lucky currently) but I am damn excited to see what this young group of lads can do under Wane.