Quite fine questions you raise.
I did not know you could even shift notes DOH! THAT would have saved me some time.
What I DID find was:
The Step Sequencer is ONLY built to deal with really a 1/4 note meter base. I did a song in 9/8, and basically had to set it up as 9 beats with 2 steps - this is hard to explain. The 2 steps were to give me essentially 16th note division in the beats. BUT because the SS only really has a 1/4 note meter base, 9/8 becomes 2 measures of space for what should have only been 1 measure in the actual song, AND to get it to play at the right tempo you have to DOUBLE the tempo, so that the 1/4 meter base REALLY sounds like the 1/8 note meter that it is supposed to have been in the first place.
In other words, because it thinks of it all in terms of having a quarter note always getting the beat, for me to enter notes where what I am entering is really using an eighth-note base I have to essentially enter 2 measures of data played twice as fast, so that it PLAYS like I had entered it in 9/8.
QUITE anoying that is - I did enter a feature request for this.
The other thing is in dealing with things like triplets. Triplets are seen by the step sequencer as EVIL, I think. To enter triplets, you have to divide the beat into some multiple of 3. So, each quarter note beat would get 3 steps entered, giving you a triplet. The tricky part is when you have combinations of triplets and quintuplets. It just CAN'T be entered as a single measure. I suppose you could do some sort of lowest common denominator math and maybe have 15 steps per beat to be able to do it. That sort of thing is extremely messy, but thankfully, it does not seem to come up too often.
Other than some extra thinking, for handling non-standard meter bases (anything other than quarter-note) and dealing with the unfortunate realities of triplets and such, I find the SS pretty easy to use.
Lastly - and I'll end on a happy note - I DID find a way to quickly and painlessly get the note range set differently than the default note numbers that is presents when you first open the SS to enter notes.
Let's say that the default note number is 47, and then it all goes up chromatically from there, but I need to change the range to begin at note number 60 and go up from there. Well, rather than having to manually adjust all of the note numbers, if you just delete all of the notes but one (use that X up at the top), then double-click on the last remaining note number to change it to whatever the LOWEST note number in your target range should be, then all you have to do is repeatedly hit that '+' sign at the top to add as many notes as you need. It will add them to the top of your lowest note, chromatically building up whatever range you were looking for. It is REALLY fast.
I hope some of the above makes sense - couple of things to look out for, and 1 technique for saving time, hope it all helps you with understanding the Step Sequencer some more.
AND thanks for the video links, Swamptooth, I will check those out too - sure to learn some there, as well.
Bob Bone