I think the focus on classes rather misses the point in this instance. For me, a mini's usefulnes isn't determined by the class it's intended to represent, but rather by the equipment it's carrying. For instance, a human fighter with heavy-ish armor, a weapon, and a shield could as easily represent a paladin.
While I understand (and to an extent, share) your conernces about the variety of minis available to represent any given character concept, I think I'll wait until I know what the minis will look like before deciding if WotC has done enough to represent a wide-enough variety of characters.
Now this is something that has always dumbfounded me. The weapons are the last thing you will see proper combinations of for YOR character, unless you use just generic. set-ups.
Cleric's all get maces, rangers/bows, fighters/swords, etc.....
While race should be a no brainer, the class isn't too hard to represent either.
As long as yuu say there is a weapon usable by the class and the armor is correct, there is a look to most classes.
Take older editions where a cleric couldn't use bladed weapons. You didn't want a sword in the hand of your cleric mini, because new people couldn't just pick up and tell which was what, and the DM could even forget. Just like the minis games themselves the mini is WYSIWYG in a manner to let know what the thing is going to do. Monsters are probably smart enough to know as well for tactical reasons. Yeah it is metagaming to say the least, but when using minis over say M&Ms there is a reason to use the best class representation.
I remember old minis that had no weapons, and you just bought packs and plug in what you wanted into the hands.
With plastics this would be easier to do, but maybe no as easy to mold and package.
So the armor I agree with needing to look right, but there is give depending on feats, that is making the classes hard to detail which would represent which in 4th that translates to the minis as I looked it over during the day today.
It is going to be a tough call to see what it is, and will take a hands on look at them.
I seriously think the old class groups will come into play. Fighter looking, rogue looking, mage looking, and priest looking, will make the minis Heroes and probably provide enough minis to represent all class combinations.
Fighter #1 could be the paladin for the group, and fighter #2 could be the fighter. Females may get lucky in this as that they will not have to fight over which mini they get to use.
Seeing them will be important.
@ Star Wars minis customizing.
I love that Games workshop Citadel Colour laying there in supplies needed. That was the laugh I needed for the day considering Games Workshop master painters ('EAVY METAL) suggest using Reaper or Vallejo paints!