Del and Mirallas could hurt teams and Pienaar especially around the start of the season was decent. They might have been inconsistent but what wingers aren't excluding the really great ones. However McGeady never looks like he's going to do anything, Atsu hasn't impressed, Piennar is either finished or will need a lot of time to get back as he's far off it and Mirallas is injured.
However we don't need to do either of those options regarding Naismith.
Given we have no wide players it's pretty clear we need to play a diamond with Naismith and Lukaku up top together and Barkley behind.
It puts a lot of offensive pressure on Barkley, Coleman and Baines to create the chances but frankly they're our best offensive players ironically considering two are defenders.
It might turn out to be a blessing in disguise because that's the formation I would have played from the start although I would have played Mirallas instead of Naismith.