The make-or-break part seems to be whether midline attachment actually saves time without adding a pile of extra pieces and restrictions. If it still needs a separate Chicane for SRT and gets very picky about rope diameter or user weight, a lot of the convenience disappears. After the Reflex discussion, Petzl will probably need to be very clear about the combinations they approve. A clean midline install that still feels like a normal Zigzag would be interesting. A device that only behaves well on one narrow rope/setup combination would be a much harder sell.