Found a case that I'm unsure about. Maybe it's fine, but I would like to draw attention to it either way, so that whether it should be allowed or not can be considered.
Let's suppose we have a tunnel that's vertically *just* too short for a shimmier (or maybe even shorter than that), followed by a drop (but the ceiling continues). If you assign a shimmier to a lemming on the last pixel before he drops off the edge, he can shimmy from that point.
Also, I'm really not sure about the Shimmier's placement in the skill order. I know in general there's an intention to overhaul the order altogether, but as far as the current system goes - I feel it should come either between Disarmer and Bomber, or between Blocker and Platformer, with me leaning a bit more strongly towards the latter. Reasoning: It's a short-term ability that's used instantly and is gone once the lemming stops performing the action, but doesn't modify the terrain in any way, similar to the blocker. Reasoning behind between Disarmer and Bomber: It gives a lemming a movement ability, like permanent skills do; but unlike them it is not permanent so shouldn't be in the middle.