How to add swing to the old Buffer Shuffler 2.0 device?

I've always loved this device, but a glaring omission to me was the lack of a slider for swing amount (as you see on many other sequencer-based devices, like K-Devices' similar Herse from around that time). Now, I know this is awfully ambitious for someone whose only Max experience is popping the hoods on pre-existing devices, re-aligning text, adding new sliders or knobs and linking it to the live.banks object for Push mapping. I still don't have fundamental knowledge of how all the different objects work together. But without having to learn it all from scratch - what are the steps necessary to add a swing parameter to this thing's internal sequencer? Or where should I look to get the fundamental knowledge for that?

Here is the device with my "edit" so far - under the hood it's still unchanged.