> more drag That's true - although the antenna can be oriented to be perfectly parallel to the direction of travel - therefore only experiencing drag from the

> more drag That's true - although the antenna can be oriented to be perfectly parallel to the direction of travel - therefore only experiencing drag from the edge cross sectional area. > increasing interference with astronomy The antenna could be painted matt black. It can also consist of ~95% holes without much loss in functionality. > increased collision risk, I don't think it will matter while the number of uncontrollable satellites remains low. If I were a regulator, I would put a cap on the number of uncontrollable satellites that may be in orbit at any given time, and if that cap is exceeded prevent all new launches and require active de-orbiting of existing ones.