When changing patterns means changing kits, and the kits have noticeably different sounds, the change is more abrupt and not as smooth as the operator may wish.[/quote]
Using performance morphing can’t always help since moving sample start points or slots will probably sound bad, and not all parameters can be locked. Using scenes , I don’t see any sonic advantage over just changing patterns, worse even since it’s not quantised, and you can’t lock all parameters e.g note or synth on/off. So far I quite like some of the transitions between patterns with diff kits, it can sound musical to me.

The stuff with loops and fading sounds like a pain. If I bothered doing this it could be fun to use a Detroit style spin back.

On the other hand, changing patterns is currently so unreliable that I will probably use all these methods.[/quote]
There is no need to lock synth/sample on/off, when you can lock their levels, this way you can have two different drum lines per track and use the scenes to choose which one is audible.

The idea is that when pressing a scene, some elements are replaced by transition elements, those new elements are also stored in others kits/patterns, once at the upcoming pattern you proceed to replace (again by using a scene) those elements with the default elements for that kit.