On the "jumper hits wall" scenario - I do get the feeling many people are only considering the case in the left in the attached pic. However, the case on the right is likely where the difference could lead to some interesting situations - so don't forget to consider that too.
The scenario on the left produces these two differences:A: Jumper hits the wall, turns, lands, then walks away from the wall. i) Direction-wise, no difference has occurred here than if the lem had just walked into the wall without jumping.
ii) If there was a pickup skill at jump height, then the jump would be useful.
iii) There is no further opportunity to interact with the wall. iv) If no further action takes place, the end result is that the lem walks away from the wall.
B: Jumper hits the wall, slides down, then walks towards the wall for e.g. 1 frame before turning around. i) Direction-wise, no difference has occurred here than if the lem had just walked into the wall without jumping.
ii) If there was a pickup skill at jump height, then the jump would be useful.
iii) The lem has a 1-frame opportunity to further interact with the wall, e.g. by climbing, bashing, etc. iv) If no further action takes place, the end result is that the lem walks away from the wall.
The scenario on the right produces these two differences:A: Jumper hits the wall, turns, lands, then walks away from the wall. i) The lem walks back the way it came, meaning that the jumper has ultimately functioned in place of a walker ii) A walker/other skills would be required to turn the lem around if needs be.
iii) If there was a pickup skill at jump height, then the jump would be useful.
iv) If no further action takes place, the end result is that the lem walks back the way it came.B: Jumper hits the wall, slides down, then walks forwards (underneath the wall). i) The lem continues to walk forwards. ii) A walker/other skills would be required to turn the lem around if needs be.
iii) If there was a pickup skill at jump height, then the jump would be useful.
iv) If no further action takes place, the end result is that the lem continues to walk forwards.Therefore, the second scenario does indeed produce more differences. However, whether one is
more preferable than the other depends entirely on the layout of the rest of the level; they do not carry any particular advantages either way in and of themselves.
The first scenario, however, produces a difference which
does carry a specific advantage: i.e. the opportunity to further interact with the wall.