Hum... those microtubes would allow the water to clear out nicely, but might create a huge pressure drop.
As for the outlet, it'd be "Radius" style, but much smaller
edit: the only reason I'm sharing this idea, is because I recently noticed that out of all the blocks that BillA tested
here, Owen's block was a high performer (
details here).
It amazes me to see this type of block perform so well, and with such a steady performance curve. It's also the easiest/cheapest to build, and just about everyone can do it.
So I'll try to keep this concept under the same spirit