I didn't go in on the sci-fi or fantasy stuff from Battle Systems, but did put in for a base pledge on the Urban Apocalypse stuff. I'm still not sure how much I'll add on just yet.
Your stuff looks great, but as you mentioned, it takes time to put it all together. I have all of the Terra-clips stuff from WWG and it looks great too, if you can set aside the time to put it together. It's definitely not as quick as throwing down some buildings, cars and scatter terrain from your collection and getting a game on the table.