He's gained quite a lot of experience as an assistant since then and more importantly as a coach with the current squad. I'd be mighty surprised if he switched from a successful style of play to something regressive.
My main concerns are simply improving small things on what we were doing, we need to perform from December to the end of the season, in four full seasons under McCall it went a bit to shit at that time of year.
Constant injury crisis and chucking injured players in, a staple of McCall's reign.
Someone who avoids both will see us fine.