I guess I figured out something for myself, in all of this.
For both projects and Step Sequencer, I will construct everything so that I convert everything to double the value - meaning both tempo and meter base.
What I mean by this is that since step sequencer cannot deal with eighth-note meter base, I will construct the entire project as if an eigth-note were really a quarter note, and double the tempo throughout the entire project.
What that will do for me is allow me to enter all measures with a meter base of a quarter note, but because it will play at twice the speed, it will really be a meter-base of eighth-notes. In other words, what used to be a quarter note would now be entered as a half-note, and that way all eighth-notes would become quarter notes.
In the above construct, what USED to be a single measure of 4/4 would now become two measures of 4/4, with each quarter note being now entered as a half-note, any eighth-notes entered as quarter notes, 16th-notes as 8th-notes, etc. 5/8 would be entered here as 5/4, and due to the tempo doubling throughout the project, the 5/4 would sound out as the former 5/8 would have, were the tempo not doubled.
In this manner, it would eliminate the giant hassle of doubling and subsequent halving of the tempo I used to always have to do, since now it would ALL be done at double-tempo, and only note-value doubling would occur.
I have just tried the above approach in sequencing up a Dixie Dregs tune called Night Meets Light, which has a ZILLION meter changes, 4/4, 5/8, 6/8, 7/8 all over the place.
Since now I set the tempo to double the real tempo (original is 120, so my new tempo is 240), I never have to go back and adjust the tempo in order to switch between 4/4 and any of the eighth-note meter bases (5/8,6/8,7/8). This saved me a BUNCH of time, AND everything was quite straight forward in the step sequencing too - I just had to double any note values, which was quite east, since most of the tune's guitar notes are arpeggios of eight-notes. Since those became quarter notes now, in step sequencer I just create clips of for example 7/4, and leave the number of steps per beat at 1. Every eight note then is now represented as a quarter note, with 7 per measure, and the sequencing goes very quickly.
I hope ANY of the above made sense. It does to me, even if I cannot explain it.
I would, however, trade all of the above for them fixing/adjusting step sequencer to nativel allow an eighth-note meter base.
Bob Bone