I think some people are looking back with rose coloured glasses. We may have won games...but which league were we in at the time? And what happened in his final season?
In the 21 years I've been going to the Albion with my dad, Albion have gone from an average division 2 promoted side who almost got relegated back into that league, to a half decent PL team with several ups and downs in the meant time. Mowbray may have brought a good element of football during his time, but it needs to be noted that much of his spell was spent in the Championship, not the PL.
There's no doubt AI is well out of his depth, but going backwards won't solve anything.