Yes it's true, André had a poor English pronunciation...Well they were all good voices back then (ones better than others) and IMO better picks than Blaze back in the day. If it was Blaze nowdays (the man is singing 1000 times better) a #D downntune would be enough for things to be perfect.
But there are some issues regarding some of the candidadates:
Regarding the other rumours:
- André Matos had an enormous voice but his accent was too strong (descanse em paz).
- Doogie White and Damian Wilson both have too soft vocal tones for the aggression of almost half of Maiden's catalogue.
- North and Grimmet are way too falseto Power Metal proned.
- I confess I had to search for this Glynn Morgan guy since I've never heard about him. And damn the ma has fire on his belly! His voice can go really rough and also hit tenor like tones as well as falsetto. I think it would have been a really interesting choice.
So, to sum it up, here are the 3 guys I think would fit the job better back in the early 90's (audictioned or not):
- Falaschi has the same problem than Matos.
- Scheepers would've create an Iron Priest kind of thing with a bit accent.
- DiAnno singing Dickinson's material? naaaah....
- Belladona could work despite the the nasal tone and american accent (the man has an excellent operatic ring)
- Michael Kiske - Yeah he uses lots of falseto and has a tad bit of accent... but has an incredible tenor tone (just check A Little Time) and is a one in a lifetime talent.
- Tony Martin - This is a no brainer.... that Dioesque fire on his attack, tenor like voice and experience would work out really well
- Glynn Morgan - For the reasons I pointed before... and if Maiden were searching for a more modern edge this would have been a great pick.
You're right with Glynn, he had given a lot of play, an interesting voice. Did you plug it with Mindfeed or Threshold?
Doogie was one of the most versatile.
For me, Grimmet was not a good option.
Belladonna despite the accent, having a voice that fit but... being American...
Try listening to Tim Lachman in Gargoyle or Eleventh Hour... or listen to his version in the Slave to the Power tribute.