Let me explain: for every new elevator shaft you get one elevator car.
Long elevators suck because they only have one car.
This is why short elevators are better. And also why the first part you build, of an elevator is the most expensive.
Adding to my comment. I think the allied teams should be more clear. Maybe similar colours for the same alliance (Dark blue, light blue). Because it's really important. You need to make sure the other alliances are fighting each other or else you have no chance.
I don't understand: Level 5 (the 'crazy' one), at the start it says '2 factions are fighting for world dominance...' or something.
But there are many factions ???
I totally crushed this game. The secret is to use only ranged units, and 1 light for capturing territory. Get 2 snipers early in the game, and try to keep them out of harms way by keeping them back and having them advance to the flags at the side. Later in the game go for 1 rocket tower and 1 mortar, or 2 rocket towers. Slowly advance through the middle of the map with towers.
Optimal army setup:
1 light
2 snipers
1 mortar
1 rocket tower
always capture territory with your light unit