While I certainly won't "nay-say" if the majority of folk want to name the Park End after him, personally I'd leave naming a stand after him until/unless we move grounds. Then I'd have the Howard Kendall stand.
Otherwise it could be argued that Dixie Dean should have the main stand named after him - his family are still regulars at Everton.
What I mean is, where do we stop on this one? I'm not totally against it, but I'm not really super-mad on the idea. As Esk says, maybe another form of tribute, perhaps a statue like the Dixie one.
On the other hand he is the most successful manager, so I can see the attraction. I'm easy either way on this one, basically.
I think - if we were to name any stands after Everton greats - they deserve to be recognised as true heroes of the club and they should be long standing achievers for the club - IMHO the only serious candidates are W R Dean, Brian Labone, Kendall and probably Harry Catterick - that's two as footballers and two as managers (though both were players and, yes, Kendall was a fine player too). - they are all now deceased so we don't get into the maudlin argument of naming after the living (legends)...
If we were to use those 4 examples we should think about their origins - Kendall North East, Labone Liverpool, Dean - Birkenhead, Catterick North East: So, how appropriate might it to be to name the North/North East half of the ground Kendall/Catterick Stand/End and the South/West areas Dean/Labone Stand/End?