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(sigh) Oh no...not again!
While FILT and DMND are usable with PSTN, they ruin the aesthetic of saves not to mention forcing people to make indestructibe items. Let's face it, the entire point of TPT is to create something amazing, then destroy it; and that one pixel of DMND or CLNE left behind after your awesome bomb destroyed everything else is rageworthy; an intangible placeholder element that lets structures retain their empty space when being pushed by PSTN would allow moving spaceships and cars, while being 100% destroyable.