Of course if you need to make something faster then a quarter note then you can just convert what u have on the sequencer to the piano roll and edit it from there.
One can shift notes in the step sequencer. The restriction is that they only shift forwards by a maximum of one step - but you can still quickly set up quarter notes and such, it's just that they won't be graphically represented at first glance.
For instance, when you record and you hate it, you either have to delete the entire thing or delete the part you hate and then record the new part in.
I tend to set a six minute time in which to record - sometimes more. Then I review what I've got, cut out the bad bits and keep the stuff that worked. That way I have a number of variations and I often find that I end up going in new directions.
Then I record over the top of that to create harmonies - this would be the equivalent of the drum fills. Once everything is chopped and arranged, if it's a synth, I then record automation in a similar way to above.
Sometimes I'll use first takes - even if they're out a bit - because they inject a bit of life and motion into the track - though I most always quantize drum hits that are close to hits played by the back beat or cut them out entirely.
I figure that, "If I'm moving whilst I am playing/performing and that performance is recording, then some of the motion of the rhythms will be enhanced by my natural response to the music.
