Yup. Why did it actually die? Never figured that out...that map and ndisles. I miss donut and that map with the 10K base in the middle.
Terrain design killed it off.
First of all, all big maps were gone for a year or so, leaving only Ndisles as a true Tank Town map.
The center town was enlarged, second step the spawns were tripled and pulled back to make spawn camping more difficult. But at the same time it made getting into action quick more difficult. But TT was still working...
... and then came the hedges. And within weeks the player numbers in GVs in TT (which had been stable for years) plummeted. Long way to get into action combined with a terrain largely unsuited to tank combat killed it off.
And with a relatively high player fluctuation, it needs only a year or so until things are getting largely forgotten by the collective memory. When Trinity finally came back, I thought "WOOOT, Tank Town!" and immediately spawned there. Unfortunately only a few other players had the same thought, and basically all of them were old-timers. But we were not enough to get any good action going again. The concept of TT has simply been lost.