Play Sim Tower and copy how they implement elevators. Basically, elevators go on top of other rooms (so they don't take up space), and you add additional elevators to each shaft (so if the queue gets long you just buy another elevator, not another shaft).
Pretty good game.
Like everyone else said, it would be nice if you could control your teammates. But instead of an entire way to control them, you could select about three options, aka attack, defend, buff(I know about the options that are there, but this would be in battles).
Another flaw:making 90% of enemies able to heal doesn't make it fun or challenging.
fun, only problem was that sometimes flowers would attack much faster because you used them at a certain time but its hard to pull this off and unbalances the game if you can manage
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