OK so first thanks so much for djay 3.1 which partially solves my BPM issues by at least allowing to multiply/divide the BPM by 2.
Still, I'd like part or even all of the following (yes I'm greedy and hard to satisfy) :

- shortcut to change to halve/double the BPM value

- more importantly, a way to halve/double the BPM value for multiple files (most of djay's estimates are good for me if divided by 2 or 4 and processing them one by one is NOT an option with several thousand tracks)

- possibility to multiply/divide the BPM by 3 (or even better: any number for stranger cases)... because most of the time djay gets wrong BPM values for 3-beats based tracks and/or metrics like 3/4 or 6/8. Being able to multiply/divide by a given factor would not alter the precision of the BPM which would still be a full-fledged float or double

- if possible, possibility to set BPM values below 21 (I am definitely NOT asking for such boundaries within the bpm calculation algorithm, just the possibility to halve them to values down to 15. [I ask that because for most dances the reference speed values are in measures of four beats per minute (i.e. BPM/4) so it actually goes down to 15 for very slow tracks -and theoretically lower but that's hardly relevant. And yes I could multiply everything by 4 but it's way inconvenient]

- possibility to save a tapped tempo


Oh and on a side note, if ever you can increase the quality of the time-stretch that would be totally awesome (yes I know it's a nightmare problem but I also know some open algorithms are better than djay's one for that so I believe there is still room for improvement at a decent development cost.)

Thanks in advance and thanks again for all the hard work!