I've posted the save, and i used alot of your ideas from here, and some of my own. For example
PLAS+NEUT=FILT
PLAS+HEAT=GEL
We cant just 'get of this feed' we are allowed to post on what we want. Something doesn't get added because a couple of people want it. Plastic would be a waste of an element slot.
So stop wasting your time arguing that it would be useful and not just a combination of elements we already have.
Alright then, if moisture and water are 2 different things, than what would be the point? We don't have moisture in TPT.
And to be honest, you listed things plastic can do, not uses (what it can be applied to)