it might seems like a good thing but swapping soul catcher in place of some pillars (in unupped version) doesnt really optimize your play
think about it, if you are starved for quanta (which is the biggest reason why you'd do the swap), you might blow up a thunderstorm with a couple of SC in play but since you're lacking in death quanta before, you probably wont be able to do the wall combo until after you put down SCs and if you're unlucky and dont draw your second thunderstorm you're screwed
pillars -> bonewall -> vulture(s) -> thunderstorm = gg EP
SC -> thunderstorm -> bonewall -> vulture(s) -> thunderstorm = gg EP but at what cost?
i advise against switching pillars for SCs
if you want, ditch arsenic altogether for a couple of SC and maybe 1 pillar
and definitely dont use death pendulum, theres really no need for excess air quanta