How about that upgrade multiplier that's never coming soon? Like countries unlocking a level for each we conquer increasing the cap of upgrade and it resets every DK reset. That way the conquered countries don't provide such laughable income.
arch, aviary(zoo), bay, beach(shore), biodome(largest so far), boutique, casino(nightclub,theatre), cave, cyclotron, dam, dentists, dock(pier), dungeon, elevator, florist, fire, flat(apartmet, highrise), fort, fountain, funhouse, gate(shrine), geyser, hangar(warehouse), helipad, (hotdog)stand((total) waste), lake, lava, mountain, obelisk, orchard, palace(castle, citadel, fortress), parkinglot, playground, port, (this one surprised me:)preserve, quarry, roundabout, sandbox, statue, studio((art)gallery) skyscraper, slaughterhouse, square, tenniscourt, themepark, trailerpark, track(racetrack and its same as arena and such), trashcan(obviously), volcano, windfarm, windturbine, ziggurat. I was disappointed no stargate since there is tardis. no skatepark, skislope or aqueduct. no gunshop or sexshop I see the logic you can't have all the different shops.