While artefact and sweetspot would be harder to implement, a looping display of the -r output, with the possibility of increasing fan/reducing overclock depending on temperature would be very useful; would also be a pain in the backside to code via scraping output.
Thanks for a super utility, well worth the price paid.

the problem is that the hashrate over clock is quite nonlinear. I am quite certain that in some cases slightly lower clockrate increased temperature on my system and that lower core clockrate sometimes results in higher hashrate. This topic needs a lot of investigation...