As things stand many high level players have run out of things to buy with beans. I suggest the Forrest Dwelling. Population building the same foot print a a Noble Residence, cost 5000 beans holds 50 population at level one. Upgrade cost equals 5000 beans x the upgrade level, each upgrade adds 50 population. Maximum of 10 such Dwellings. A level 6 Dwelling would therefore hold 300 population at a cost of 105000 beans.