Also, is it time to add the ability for a greater processing latency such as 8192 samples for (theoretically) higher levels of quality? I could see this being especially valuable for the VST versions...
I don't think it will help with audio quality. For every latency increase step, the effect on the quality is half of what it was for the previous step. So 1024 to 2048 has twice as much effect as 2048 to 4096, and going to 8192 would only have half the effect of that step. And higher latencies may cause other issues. So, maybe?
I think what Hans is saying, is: there's diminishing returns.
See if you can hear the quality difference between 2048 and 4096.
If you can, then it's probably subtle.
Now imagine that quality difference, but only half as audible: that would be the benefit of having a latency mode for 8192.
I don't think that would be worth the development time, but we could look into it in the future.