i updated my copy of csp recently and the ability to rotate the pivot of the free transform gizmo is such a nice feature... no longer will you need to straighten out an angled object to distort it properly... sooooo nice. i recommend getting version 5.0 for this

oh nice, clip studio paint has photoshop-style smart objects / file references. (so you can link a .clip canvas inside of another .clip canvas and it automatically updates) its called "file object" btw.

i dont use smart objects frequently, but on the rare occasions i did it was very handy