I was asked why i wanted McInnes, can i ask you the same, why Dean Smith? He as achieved less than McInnes! For me not a chance but I'm not knocking your choice just wandered why?
For me he has done very well with Brentford on their tiny budget, he gets his teams playing good football which we all want to see. Admittidly I have done some further research on him to answer your question (thanks Wiki) but this has only made me prefer him more over others named so far.
With Walsall he turned them around from relegation (when they were 9 points adrift in league 1) and then completed an overhaul of the squad the next summer. Over 2 seasons he turned them around from being relegation faves to finishing 9th. His ability to bring in youth players from the youth squad and new transfers/loans worked well.
The next 2 seasons at Walsall saw him finish mid table again (plus cup final), then he left mid season with Walsall in 4th place to join Brentford (rather than being sacked).
during his time with Brentford he has pushed close to play offs which is a great achievement in my eyes as they consistently have to sell players and bring in free transfers/loans rather than build a squad.
It would be great to see him make a natural progression to a bigger team like ours where he has potential to work with a bigger budget and a higher quality of player.
Pros:
Younger manager who clearly has ambition, not a merry go round old timer
Plays good football
Invests in youth and has shown that he can improve a player and sell him on for profit (something we have not done consistently but should be looking to do IMO)
Has a good track record and plenty of experience of the football league/championship without "failing" at a club yet.
Seems like a likeable man in press conferences I have seen
Also doesn't look like a pushover either
Cons:
Some may see as a risk - but I would prefer this risk than bringing in a has been looking for another pay packet.