What are some of the ways you try to add depth and room for improvement to otherwise really simple kits?

One answer to this is by moving the decision space from tactical to the strategical level! Tahm's skills are all very straightforward to use. The Q is easy to land, the W only asks you who you want to eat, the E is literally "press this when in trouble"--but the big question is, where do you go with your ultimate? When do you carry an ally forward toward the enemy in your belly and when do you keep W to save your ADC?
Jury's out on whether or not I was successful with this on Tahm, but that certainly was my goal.

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