Disagree on that he can be bullied easily. He's built like Hazard, small and agile but strong at the same time. He can definitely play in the Mane role 100% which why I think people are saying he could play on the wing. He couldn't play like Salah though I don't think as like you say he doesn't have the pace. Like you I don't see him playing as a #8 he's just too attack minded. Think he can play as a CAM, winger or false 9 and that's about it but honestly that's pretty ideal for what we want imo.
Just checked here, he is the most dispossesed player in his team, 2.8 per game. The next ones are Aouar and Depay (1.8).
I must remember we are talking about french football. They are very soft and allow a lot of space to run. English football is different. Less space, more physical players and less contact considered as foul.
When players like Hazard/Coutinho/Fekir have space, they can dribble and do stuff, but when they don't have it, it's different. If you watch Fekir playing a few games, you will see many situations where he will lose possession because he will try to dribble and won't be successful. That's because he is a pure dribbler, that's his main threat. He wil almost always try to do that. Coutinho and Hazard are different, they are more team players. Fekir does that because he is very, very, very agile. I can't remember a more agile dribbler. He is superior to Hazard and Coutinho in that department. I would compare him to Neymar, for example (but obviously Neymar is on another completely different level).
About playing Mané's role, I tend to agree. But that's like Firmino. He can play as RW or LW, but is that his best position? My doubt is can he play winger/8 as good as he plays 10? I think he can play as 9, especially thinking about our system, but as winger and 8 I have some doubts. But if Klopp wants him (wich I don't think he does), things will work out.