From all those skills I think the vertical jumping Shimmier after Nerpster's proposal would add the most.
Magno Boots are very versitile, but can mostly replace shimmiers even. In fact I would call them a more powerful climber/rockclimber/shimmier combination that you have to cancel though. So they make the 2 skills more redundant.
Pourer physics can be nuts and would make the game way more complicated to understand, especially as we tend to abuse every last bit out of the possible physics for solutions.
Laster Blaster: I side with Nepster here. Cool to use, but I think that the skill will be quite limited.
As for Jmper/Runner, I would simply repeat Nepsters sentences here as well.
J: "Would be nice to have, but would need lots of additional code and will very likely result in tons of glitches."
R: Too few uses in singleplayer and not as many skill changing combination as in L2.
Magno Boots are very versitile, but can mostly replace shimmiers even. In fact I would call them a more powerful climber/rockclimber/shimmier combination that you have to cancel though. So they make the 2 skills more redundant.
Pourer physics can be nuts and would make the game way more complicated to understand, especially as we tend to abuse every last bit out of the possible physics for solutions.
Laster Blaster: I side with Nepster here. Cool to use, but I think that the skill will be quite limited.
As for Jmper/Runner, I would simply repeat Nepsters sentences here as well.
J: "Would be nice to have, but would need lots of additional code and will very likely result in tons of glitches."
R: Too few uses in singleplayer and not as many skill changing combination as in L2.