[Gatts]

I would say:
1. I like strong armies/quests -> don't care to wait to finish them
2. It also gives a lot of fun later in the game - as you always return to this land -> so when you return level 15 from the pirat land - you can finish these quests
3. not only fun, it also gives thrills - you will not be able to travel and also finish each quests like checkboxes, you have to plan, tactisize, and prepare... This will prevent the player from brainlessly attack each stack, take all quests and make all fights boring... this will show you limits of your actual army and also the view in the future on what you need to win them. It strongly tests ones analyzing skills, judgement skills and preparation skills.