Question

The layout should be exactly like the repeater but with "tie".

What is the difference between the repeater and a step sequencer?

Answer:

It is running with the song start&stop WITHOUT a trigger but has a mute switch to mute it if wanted! Also the position is moving with the actual song position.

Answer 1

Why not vote on this topics instead of creating a new?

http://answers.presonus.com/10837/hold-repeat-function-repeater-notefx-keep-repeating-sequence
http://answers.presonus.com/11415/step-sequencer-please
http://answers.presonus.com/11362/arpeggiator-octave%26note-order-change-per-step

BTW: To me the Repeater Note FX  could be a great step sequencer with notes based relative to the notes played with advanced gate possibilities to make each note shorter or longer is it just had a loop feature instead of just playing one time and stop.
A hold feature could be very nice for "live" and improvisation purposses.
This would also be a alternative arpeggiator.