The plan that implements a bicameral government does not increase the amount of offices. I wrote a full memo explaining this years ago. I'd never advocate any system where we increase the number of offices. We have too many already.
Alright, but remind me how big of a change that would create again (I don't really remember). The plan I've proposed would create somewhere between 24-30 offices total.
The other issue with bicameralism is that with such a big federal government, you might see the same bills stay bogged down in the legislature for a long period of time over technicalities. I do like the idea of some organized partisanship or the like, but I feel like it would be hard to work through in this game.