That's what I've been thinking. Some of his better games, you'll notice he'll drift all over the field so I don't think it's a stretch to see him be able to play either side. Here's another thought...if Jürgen goes forward with a diamond midfield and two strikers, could we see Mane play more forward as the second of two strikers? Dunno if it makes sense, honestly asking.
Either way, I think we've seen that Kloppo is in love with Adam and what he brings to the side, not just attacking sense but also defensively so I don't see him being dropped for anyone at this point. Arguably the best player in England currently so he's got the cred to keep his spot unless he goes off the boil.
Regarding Mane playing as one of two strikers in a diamond, I've been having the exact same thought today. Mane would provide Coutinho with the weapon that he rarely has in Sturridge, somebody to run onto the through balls and who will get in behind the defence.
Lallana - Keita
Mane - Firmino
Firmino doesn't get enough goals to lead the line on his own but leaving him out of the side kind of takes away the whole "defend from the front" philosophy that Klopp has ingrained into the players.
I think Purple Monkey makes a good point in regards to our full backs though. We'll need them to be a lot more successful in attack compared to what they have been this season.
One thing I like about the team is the flexibility of a number of the players to play in different positions, Klopp needs to use that to his and our advantage a lot more.