From what I understand, the Feet Dry Spawn is in fact a variable error in a calculation based on where the launch points is and the target location for the LVT. It has been fixed for the next update. 
Well, that's unfortunate.
Virtually all of you anti-feet dry folk don't play in the early hours, when 15 vs 5 vs 4 is a typical player distribution and half of those are afk. I wish you did. The Tropical Thunder horde rolls bases first, and then the Jokers log on and do the same once TT logs off. Actual combat doesn't usually exist--bases typically get taken entirely undefended-- or if it does, you have a single defender doing what little he can. But maybe you consider 4-1 "combat," with the one getting overwhelmed and often then heckled when he fails to save the base. I don't. It's disheartening and un-fun.
Feet dry spawns keep the game interesting because it gives the outnumbered defending team hope of actually achieving something despite those overwhelming odds. And they do promote combat, because the momentum of the horde gets broken and suddenly the ratio of attacker to defender becomes somewhat more equal, at least at the base in question.
I get it why players horde: camaderie, sense of accomplishment, etc. But I think most would agree that hordes make the game less fun, especially in those low number hours. Taking away feet dry takes away hope as well because there is no other practical option to achieve anything big picture in the face of a horde.