James, I would like to try the beta firmware/editor. I sent you an email. Thanks.
About the LEDs...Yes it is obvious when the LFO is faster. Basically, you can try: (BPM 240, Duty Cycle %2) and (BPM 440, Duty Cycle %5), only the LFO is active without any control on, to reproduce what I am talking about.
Great that you consider a time-based effects pedal. I am very excited and looking forward to this.
Best wishes to you for the NAMM.