Sure, agreed on effective. And I don't think it's a problem to have quality in depth, it's of course much needed. I just think if it ends up being Greenwood and Sancho for the right wing, and Martial still slugging it out with Cavani for the spot up top, Amad will miss out on the playing time he definitely will need. So hopefully, if Sancho ends up coming, Greenwood will be deployed as a striker, with Amad getting minutes when Sancho is rested.
I'm in the same boat when it comes to the positions that need fixing, but then I look at our midfield and compare it to any great team now or before, and it's as clear as day that we need two midfielders. I think I'd go for a new midfield with passing ability and technical competence over any other position at the moment, even though we seriously need a centre back and another attacking player on the right.
Pogba doesn't fit there, Bruno won't fit there, Donny doesn't suit Ole's style at all, and McTominay and Fred are just way too limited to be first XI players in a side that dominates (and opens up defenses, playing at a high tempo).