Thank you all for the replies! Learned a lot.
Sequencing is more about the music, than the effects. I use the word "Notes" to refer to a sequencer you use in music recording MIDI. If you hit a key on a keybord, it inserts a corresponding note on the sequence time line.
If a song is playing, you can hit a key on the keyboard and a note is inserted each time you do. If you can keep time at all...this would be EXTREMELY helpful when sequencing effects in xLIghts to various parts of the song. Like a bass rif or bass Drum or a roll across drums. Right now you have to go in and enter each effect, find the right length (1/4 note, 1/8, 1/16th etc.), then copy, copy, copy! With a MIDI keyboard, it would enter an effect like "ON" each time I press a note. You could select the effect before hand, then use a typing keyboard, instead of a musical one, and keep the beat on the keyboard. Now no one is perfect at doing that....so that is where you beat markers come in. After you perform the bass rif, lets say, you would hit a key that "snaps the notes/FX" you entered for that "track" as they call it in digital recording, and you have a bass FX track. Then you would add drums, and so on and so on.
I am sure most don't care to be that sophisticated, and maybe that is why no one has ever suggested it, but the sequences I am building are ones like the Halleluiah Chorus, and there are many parts, and some are syncopated! One part is singing one thing and one is singing another. I have done it by hand and it looks amazing. My snowflakes and stars at the Sopranos, my houseline and wreath are the Bass, and my posts are Tenors, and the altos are other props. But it works with Bass, organ, piano, drums, guitar....anywhere where you are entering an effect like a note. Just SOOOO much easier than, enter, copy paste and paste and paste. Plus, the "snap to timing marks...or snap to grid" is what they call Quantizing in recording lingo and you can select 1/4 notes, 1/8 notes, 16th notes, etc., then select the entire track and "Quantize it". So if your timing was a bit off, it would "Snap it to the timing marks" in the case of xLights. If anyone knows what I am talking about, I am sure they would second the suggestion! Just saves an amazing amount of time. Any musician who has recorded digital multitrack will know exactly what I am saying. Importing MIDI would still require that you assign an effect to each "note" to get the same effect. But you can more easily just do it by tapping a key along with a particular part (bass, piano, drum rolls, etc.) and have it snap to the "grid" when you have completed it.