That would be nice.. But I think it would get a little crazy in resources after lv 10-12. 400 Grout and 1500 Granite is what it takes for a Floating Res to go from lv 5 to 6. 6>7 would prob take something like 1500 grout and 5000 Granite .. and goes up from there. It starts to get out of hand when it's only for 10 pop each level.