I remember from one of Paolo's posts on the WotC forums that they'd previous split the team between update and new tool work, something they now no longer need to do.
I'm confused, do you mean they no longer need to do updates or they no longer need to produce new tools?
As it is they haven't produced new tools they have just redesigned an old one. Seems to me they still need to...
a) update the web-character builder (ongoing).
b) finish the web-character builder (just to get it somewhere near as useful as the old builder).
c) redesign the monster-builder to make it web-based (not what I want but obviously what wizards want).
d) update the monster-builder (ongoing).
e) work on new tools.
Also, to say 'they made it to combat piracy' is disingenuous.
Wasn't me that said that, WotC did in their podcast, pretty clear that was their main reason.
It was a big reason, but as has been stated elsewhere, the old Character Builder was coming apart at the seams. As a software developer myself, my personal observation was that they were straining to put all the extra options into the old Character Builder design. Ergo: it needed to be redesigned either way.
Guess we'll have to take their word for that, seems the Dark Sun update wouldn't be any more challenging than the spellshard stuff they all ready added. Fair enough a redesign might well have been needed for Essentials as that changes the basics of how characters work.
As I remember from that same post, they have about 6-7 people on their development team, which should be adequate for development and testing work.
Perhaps for one package, but they have three, and they can't even seem to manage those, they are also meant to be developing new tools.