When Hitech changed the town object later in AH2, the players who had perfected dropping the town and running in the troops wailed for awhile, then learned to deal with the new town object. Hitech still had to tweak the down percentage to make capturing it worth the effort.
What people were complaining about with the new (back then) towns was that you'd have 12 guys flying and driving around trying to find the one building that was still up and preventing the capture - and the only way of knowing was to run troops and watch them not take. Field captures went WAY down for a while and only recovered with the change to the white flag and only a percentage of town needing to be down. Maps were staying up much longer and no one enjoyed that change, so in that instance I think the complaints were very well justified.
I just don't see M3 resups being the problem here. I play late night a fair bit and the dearth of good fights is a problem but I highly doubt taking resup away would change that. People would just bang away in manned ack all night like you already see too much of. I think the real problem in late night is that too many players are afraid to risk their cartoon lives unless they have a large group of friendlies to hide in and those large groups just aren't there late at night. I don't know if there's a game mechanic that could possibly fix that; the only way to change it is to change the mindset of those players.
What's really silly IMO is the idea that resups are ruining the game because if you bring 12 or 15 fighters to a field the 2-3 defenders can resup rather than fighting. 5-1 odds over a capped field isn't a fight, that's just a massacre. The 12-15 guys are just mad that the defenders aren't dumb enough to get vulched on the runway 10 times in a row in a futile attempt to oppose the horde. But why should they?
And I still say the main result of nerfing town resup would be a big increase in base sneaks without combat because no one wants to babysit a Wfluffied town for 2 1/2 hours on the off chance an M3 tries to sneak back in after it's quieted down.