Well, when designing the classes, I actually had several members of the A-Team in mind when thinking about what sort of archetypes I wanted to represent. But then, I'm sure most folks noticed that when they saw the first class in the book.
Obviously, Face ought to be a straight Faceman, since he was a primary inspiration for the class, along with some Mission Impossible antics and the Saint.
Less obviously, Howlin' Mad Murdoch helped inspire the Wheelman (along with Knight Rider, Airwolf, and the Fall Guy, if you remember that little sub-genre of shows), so I'd have him be a single classed character as well. He can pick up his other skills with some skill points and maybe a feat or two.
Also, Hannibal is a straight up Pointman. He can pick up Disguise abilities to flesh him out with his cross-class abilities, but his main deal was leading the group and filling in where needed.
There's no Snoop in the group to start, although Amy filled that role later in some respects with her newspaper contacts and such.
As for BA, well, he's a Soldier/Fixer multiclassed character. Look at all the devices he built, after all.
And I pity the fool that says he didn't have any levels in Soldier.
As far as level goes, 8-10 sounds about right, yeah. They're tough without being on the totally over-the-top scale of James Bond (a 20th level Pointman, as far as I'm concerned, by the way...).
For Department, Military Operations springs out as the proper one for the Team. This gives them all a bit of combat training and some additional flexibility. I often use Departments like this to add a touch of flavor to a character in an area other than their main specialty without multiclassing too much.
Mind you, the A-Team could be done up in several different ways - this one just seems like the most straightforward to me. Feel free to suggest others and don't let me spoil your fun or anything.
It would be fun to see folks flesh them all the way out as full characters really, then we could see GMs running A-Team adventures at Cons.
But if I show up at one of these games, I have dibs on Hannibal - he's my favorite.
"I love it when a plan comes together."
-Kevin Wilson
PS - I think the thing that makes me happiest about Spycraft's reception is all the different ways folks are coming up with to use it. Toolkits are meant to be used, after all.