Indestructible base ack would start it's own forum pitchfork and torch lynch mob brigade. The ack would be filled with cons hiding in it just like CV puffy ack.
The M3 was the only choice to pull usage metrics if getting a look at how often the M3 is used to run supplies is the goal. The SdK is filling the troop delivery niche quite nicely. The arguments and anecdotal descriptions by long time veteran players about their game experiences seems to have become compelling. My squad mate Junky can get a bit single minded and unyielding about a subject, he also has no reason to prevaricate and is trusted enough to have been invited for CM training. Lazerr has a very long time in grade with this game, and his observations on the subject are a verification of Junky's. We do not know what kind of private communications by "customers" to HTC visa e-mail and phone calls have taken place. There is how you as a customer can let Hitech know your real concerns.
This experiment is meaningless in terms of any direct impact to game play right now. A player vote won't work because how players play a game is not always how they will vote for changes in the game given a choice. And just like political polls, people will be people. That is how we got the 410 instead of aircraft that would have been used far more often. It's why I don't ask players to tell me what they think would make a great terrain. I spend hours listening and reading the text buffer, and reading these forums to understand how players utilize the terrains in rotation with the available toys.
Last I checked, towns are getting 10 troops delivered by SdK at the same rates previously with the M3 creating the same responses on text and VOX. No one has been slowed down at all other than a heightened awareness to check for M3 and SdK at the spawns. That will fade as everyone gets used to it.