Not that what I think matters, but...
I think the change has to do with making things a little more fair. In the past, teams that could manage to build their robot in moduals and what not could escape the 130 limit. They couldn't use them all at once, but these extra functions they could choose now and then were more weight than was allowed to a team that could not (for lack of resources or engineering support) create a modular design.
On the flip side, this might discourage complex modular designs - but hey - we're supposed to be challenged, right?
Good luck to all, as always.