The daily limit on adventures is an example of trade-off #2. Their implementation is generous (40 adventures per day to a max of 200 means you need to check in every 5 days) but it still means that you can't take a full week off the game without losing adventures. The more +Adventure stuff you have, the sooner you hit that max.
Having a daily limit means that play sessions are artificially shortened, which prevents playing until satisfied. It encourages players to spend the time until next refresh planning how to use their adventures effectively.
Having a daily limit means that play sessions are artificially shortened, which prevents playing until satisfied. It encourages players to spend the time until next refresh planning how to use their adventures effectively.