Good Morning Schanne:
You felt strongly, and others asked you to explain why you felt that way, no harm done.
<<"constructing dojo Sites"
Any internet addresses, I (for one) would love to see, hear what others have already done... who knows they might have something that can be "borrowed".
As for why the flooring gets such importance, that's not that hard... its the one thing which if "blown" will make the rest of the building (no matter how well done), nearly inconsequential. Flooring done badly, or outright wrong, will tear up your feet and could conceivably <sp.?> do some real damage to practitioners...
Flooring is a critical issue. Roofing is probably the next

Layout probably the most after that... cost, probably the governing factor for most construction of anything....
Merely musing aloud...
Jeff