I mean everything you've said pretty much corroborates what I've said, I'd rate Celtic as a relegation battler in PL, Rangers in the promotion convo in championship, the likes of Hibs, Aberdeen, Dundee Utd would probably stay up in the Champo, certainly if clubs like Rotherham and Oxford United are capable of surviving a championship season as both have in recent years any of those three would be in with a shout of it, and the top 6 play 4 fixtures against each other, so a good number of the games he's going to be playing in the Scottish league will be at championship standard. If Rangers make the group stages of EL he will play better teams than he could possibly play against on loan at a championship club also, so I rate this as equal or slightly better than a champo loan tbh.