I think you could go a more attacking formation like a 3/4/2/1 and still have that solid centre/core of the team underpinning it against teams that will sit in at Goodison. Also, and I don’t want to keep repeating myself, get Patterson in for Young, he retains possession better and he will offer an outlet down the right, and should free up Harrison to be more effective offensively.
Although against teams like Arsenal, Brighton etc playing counter attack, the system we’ve played recently, is fine if we do better when we have possession, don’t give it away so cheaply, so often.