What types of active gameplay do you like in incremental idle games?

I'm researching the active aspects of idle games.

What is your favorite type of active gameplay in idle games(can be multiple)?

(By active I don't mean buying upgrades/spending currency)

1. Constant interaction: like Idle Slayer - you need to constantly jump to slay enemies
2. Low effort + scarce interactions: golden cookies that appears every X minutes to get big amount of currency
3. High effort + scarce interactions: fill bar that gives you 1.5x or more progress for few minutes until you need to refill it again.
4. Clicker interaction: like cookie clicker -> spam clicks/auto clicker to progress faster
5. Something else that I missed, you can also give game examples

Thanks!

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x-posted from /r/incremental_games by /u/CacheGames