Anyway the point is it really doesn't matter if it's DA, DL or what rev, an economic planet has only economic buildings, farms and whatever morale buildings to keep people happy.
Sir, I think you were missing my point. What you are saying here is exactly right, but what I'm trying to say is that getting that mix of buildings is much more complicated and requires a lot more planning in DA. Just one farm and the rest stock markets (which others are advocating) is NOT the best setup... just look at the numbers:
Say we have a PQ 10... so after the colony we can deal with 1 farm and 8 stock markets...
max of 13b people with 200% econ bonus
But if we replace a stock market with a farm, you get
max of 20b people with 175% econ bonus, which is a lot more money.
Only, you won't be able to keep those people happy. Which is why you need to start deciding how many people you want and what tax rate and approval you are looking for. How many farms and VR centers are worth the tradeoff in stock markets? It depends on a lot of variables.
To get the most out of your economy in DA (not to be confusing apples with oranges, I completely agree with you on DL) - especially with the 100% morale cap - requires more work than just 1 farm and all stock markets. I can't even give you a template world without a lot more data about what variables you want to be at what points.
Hope I'm making sense.