Seems like this could be possible, in theory anyway. There are 128 patterns and 128 kits per project. If there was an ‘Autosave kit with pattern’ mode that silently saved KIT2 when PATT2 was saved, bob’s yer uncle.
I really like this way working too but I do often long for kits on the Digitakt. If kits were able to be saved 1:1 with patterns (automagically), you’d get the DT workflow but still have access to kits. For instance, I’d probably reserve Bank A or H as blank patterns with kits of bass/pad/lead/drums for quick songery. Get something going, copy the pattern (and kit!) to B1, save it and carry on. Then, no more ‘wait, what am I fucking up if I save this kit?’ tomfoolery.