9.12 brings with it what seem to be the last major gameplay changes for the low tiers (T18 replacement, draw range change) for a while, so I'm finally ready to dive in and work on ranking all of the tanks again.
As a reminder, here's what I've said on the subject in the past:
The I-Go will stand at the top, and the T18 might not be far behind. Below that will be the M2s followed by some combination of French tanks, standard gun tanks, and the couple of good autocannon tanks. The other TDs will sit below that, followed by or mixed in with the worse autocannon tanks. The bottom of the stack will be occupied by things like the Vickers Mk. II and the Te-Ke. This is all working on the assumption that view range is far less important now and that alpha, armor, speed, and DPM are more important. When September is over, the first thing I'll start playing with is the H35 with the 25mm gun and possibly the American M2. That and one or two other tanks should be enough to paint the entire picture for where the tier 2 meta stands now.
This is still roughly where I stand on things, though of course the T18 has now been replaced by the T3 whose strength is yet to be evaluated. As far as the I-Go is concerned, I don't think many players have picked up on its strength. According to spencer's new dpgwhores site, for those who've played the tank at least 100 times, there aren't even five people who have DPG above 300 or win rate above 65%. The entire remainder of the clubber community is avoiding this tank altogether, and either they see something bad about it or something better in another tank, or everybody else is wrong. I'm pretty sure it's the latter.