Could do far
far worse imo.
If Wenger were to go I would not object to this appointment at all. Unless perhaps there were other self-evidently better options, but I can't think of many that would realistically be available and/or willing.
Edit: for me what absolutely must be avoided is someone in the Brendan Rodgers/Roberto Martinez/Eddie How type mould. Someone like that might be a good shout to be the replacement for Wenger's replacement, after Wenger's replacement has steadied the ship after a massive paradigm shift and change of regime. For that job it imo needs to be a candidate who is either widely recognised as being legit great at the top level, or at least moderately to extremely experienced at the top level.
That said, this talk of Wenger replacing just makes me feel super sad. His various flaws and faults aside, I don't want him to go