I think that even if you were going to export at such high bit depth and sample rate it wouldn't make any difference because I doubt that the audio engine in the roli app supports 96k 24bit, so the samples are probably at 44.1/16. It's like zooming in at a 1 megapixel picture and expecting it to improve in quality. If the audio files and engine aren't at 96k/24 in the first place, it won't make any difference.
variablebitrate
I've been writing a bunch of loops and melodic parts in NOISE and I love using the app. The only downside is that I've been exporting the loops to import into other DAWs to chop up, re-arrange and mix and exporting from NOISE forces me to use 44.1/16 loops. I think an option to use sampling rate and bit depth could be really powerful and could intergrate easily with the pre-existing exporting options. I feel like I'm on the road to writing a large amount of songs with NOISE alone and I want to be able to that without saracficing sound quality moving further along.