Giving the opponent two moves, knowing that he has those, is too costly, though. In the opening you might get away with it, but in a typical middle-game position the opponent would use those to make a hit-and-run capture.
To be fair, Fergus' solution to that issue is quite elegant imo, and even just restricting two consecutive moves by a single piece alleviates hit‐and‐runs per se. It may be getting away from the intended point of this variant to introduce a whole nother idea but it seems like a usable way of introducing multi‐moves into a mostly‐single‐move game without breaking things too much
To be fair, Fergus' solution to that issue is quite elegant imo, and even just restricting two consecutive moves by a single piece alleviates hit‐and‐runs per se. It may be getting away from the intended point of this variant to introduce a whole nother idea but it seems like a usable way of introducing multi‐moves into a mostly‐single‐move game without breaking things too much