Haaland/Alvarez up top as options (we can also still play false nine when Pep feels it's the best option), with Grealish/Foden/Mahrez/Bernie/Palmer rotating across the wings can't be seen as anything but an excellent attack.
The only thing we've lost is that wide, high, fast type of winger who can just toast full backs / CBs with a fast move, but I think we make up for that in more consistent chance-taking, plus the likes of Cucurella/Cancelo who will hopefully arrive and provide width. Plus, Grealish - Haaland - Foden wouldn't be exactly a slow front three, either.