[LAD] jackd buffersize

What is the rationale for jackd requiring buffers to have number of frames set to a power of 2? Could this be relaxed to perhaps a multiple of 16, 32 or somesuch? I have a few reasons for wanting to do so a) Neither 128 nor 64 matches a samplerate of 96K and 1ms between USB midi messages. 96 would. b) CUDA (Nvidias gpgpu language) appears to have some magic regarding 192 threads that seems to work most fluently. This also happens to be a multiple of 96 opening up for some programming efficiency advantages when threadID equals [a multiple of] frame index. c) Although certainly possible, 256 parallel "moog"-filters is a bit overdoing it, no? IMHO, once a multichannel polysynth goes beyond 96 voices (in this case with two filters - one left, one right - per voice == 192 threads) the experienced return of improved quality/complexity is diminishing steeply, getting lost in the mix. I'd much rather spend more clockcycles on, say post-processing of channels - or more room for a simultanious video stream.