This is a fascinating thread, and I've been intrigued by both the technical ambition and the social concerns expressed here.
I consider myself neither senior enough as a citizen/landowner nor adept enough as an LSL scripter to have much in the way of helpful input; however, I'd like to float a $0.02 theoretical approach, just for discussion's sake.
Since this is a game (in the best since of the word), it seems to me that the most profitable goal is to cleverly (and evenly) distribute advantages among independent parties, rather than deliberately crippling them.
Aside from addressing the "what does one minute really mean?" issue/bug in the land management tool suite, it might be fun for the Lindens to introduce a world-encompassing "ionosphere" through which objects could move, but in which no building could take place. The sky objects would have available a suite of sensor functions to tell them all about the specific land over which they were passing, but perhaps some enforced restrictions as well, just to make it interesting? (say, a mandatory orbital decay/burn cycle, a very limited scanning cone, whatever...) On the landowner's side: the sensor function suite could be enhanced to detect information as satellites passed overhead, such as satellite owner, whether scanned, information which was returned to the satellite at the time, etc.)...kind of a balance-of-intrigue.
I suppose it would open a whole can of worms as to whether physical objects could actually be rezzed and deployed downward, a la railguns. My thought would be no; that this "ionosphere" would be signal-only. (It would please me greatly to see a lower, separate, fly-only zone, however...I am sick to death of crashing Cubey's toys into 200m-high lovenests, just trying to cross the map without a tp.)
The idea, after all, is to evolve the game with new options, and to keep things lively. When bright folks such as yourselves disagree so vehemently...why, pass around the goodies and watch the fireworks, that's what I say

- yoshi
Ed: "Cubey" not "Cuba." Duh.