It probably depends who you're playing against tbf. There may be times when teams play a high line and we struggle to get through that someone like Mayuka could come on and make the difference. At the moment though we don't need it.
I do feel that we're benefitting from having slightly quicker fullbacks and Yoshida.
I still don't think Lallana is great at the defensive side of the game, he just isn't required to defend as much IMO. His attacking play has been sublime though.
We might be hitting form but they're on a sustained run of it. This will be much tougher than yesterday for sure. They're quite a similar team to us in terms of work rate and style. We must take our chances and we need Gaston on form again as he is the one player that they have noone anywhere near as good as.