The control system is a problem I agree. Lemmings 3d somehow lost all the fun in it. The problem is that in the 2d lemmings games, the feel was created because you could micromanage almost every pixel would, but this amount of control is not possible in 3d, too many angles. That was why I had the idea of them running off randomly. I envisage them having a great deal of autonomy, wandering about at will. With blockers (or attracters if we borrow from tribes) there could be a means of keeping them loosely in one place but part of the fun might be herding them back together as they wander about towards deadly cliffs and lakes...
I know autonomous lemmings is a bit of a change from the original, particularly when we are so used to them moving predictably, but its the only way I see them working in a 3d environment. The alternative is to have them stand still (like pikmin) but theres no pressure if you can take your time, and that wouldnt be very lemmingsy I feel.
I didnt know that sony had the rights. That is a bummer. You can't do anything with a PS pad.