I planned my person:

My person will be a khajiit with a bow and will do lot of merchanting and crafting.

heh I don't think many will go into depth at the moment as they are largely stuck at the first hurdle. There's too much choice. It's hard to get into playing when you can't make your mind up.

Perhaps when the "We're fairly happy - nearly finished" class details are released and the ability trees, the excitement will build up a bit, and people will begin deciding what appeals the most and how they want to build around it. That's the bit where the molds really get broken and the excitement builds up

EDIT: As long as there's a wide range of differing playstyle choices amongst the various class trees it'll be good to go. Hopefully that will include:

At least 2 viable trees focussing on survivability / tank friendly skills.
At least 2 viable trees focussing on different mage skills
At least 2 focussing on CC of different styles
At least 2 focussing on Melee / poison etc
At least 2 focussing on bows / traps
At least 2 focussing on healing styles with different flavours

That's 12 trees. If each class has 3 and there are 4 classes, we're sorted. Of course there are a number of other cool things in there, so we'll have to wait and see how it pans out. The important thing I guess is that people feel they have a bit of choice even when they have a single function in mind.