I find that I love the free kriegsspiel model not because it is simple (though that is a large plus) but because it all is about intuition and honesty with subject matter. In general, storygames and mainstream modern RPGs and even a swath of the old school community don't appeal to me because portions of the experience are deliberately gamified when they could just be role-played. I've said elsewhere that an adventure game needs little more than interesting choices regarding interesting people amidst interesting locales.
You've met a person, right? How do you talk to them? Now talk to a person inside of a game in the same way. Context, motivation, and the assumptions of the setting guide your actions and approach, not mechanization. I appreciate arguments made that certain rules and precedures help to emulate genre or setting, but my counter is that those methods are redundant, as even with passing communal knowledge of the setting at the table, everyone can reasonably play anything with imagination and conversation. Rules can be helpful as a framework, but they are not necessary for play. All you need is a world in which to act.
My challenge for you all is thus:
- Pick a genre, setting, or time period
- Write one or two paragraphs on context
- Produce one page of random tables
- Give advice on tropes and how to use them