I realise I've probably left it a bit late to mention this, but ...
I once asked Mark and Johannes about the possibility of having the board run at a bit-depth and sample-rate of the users choosing, something we could specify as a patcher setting so that it would upload to the board along with the patch, and configure the bit-depth and sample-rate.
The reason I asked about this is because it would be very nice to be able to sample in 8-Bit, and to have an entire patch run in 8-Bit. It was suggested to use various methods to simulate it, but the problem with that is it only increases the load required.
Considering that axoloti manages what it does at a sample rate of 48KHz, can you imagine how much it would be able to handle if it were truly running at a genuine rate of, say, 11.25KHz, and at a true bit depth of only 8-Bit?
Imagine the size of the patches we could make; we'd likely be able to knock-out a full-on 8-Bit workstation from an axoloti if it only needed to handle those bit-depths and sample-rates.
If I recall, Johannes said it was possible but would take a lot of effort, so unfortunately it's not on the todo list.
It's a shame really, cause of course it would permit the opposite too. A person might want to make a super-high-fidelity outboard effects processor that runs at 96KHz. So what I'm saying is, if at all possible, please build this ability into your version of the board - it would be really nice to be able to do stuff like that.