Completely agree, 1 up front can be more attacking than 2 up front if you get players playing in the right spaces - look at how we played under Pochettino. Just helped we had Lambert, Lallana and J Rod all on fire and they linked brilliantly.
We were incredibly poor in that first half, second much better. I think I'd prefer Boufal to be given a free role behind Gabbi, with Redmond & Tadic/JWP either side.