Guild Wars 2

I wold have to ask how you propose that works? Traits?

I think customization of things is interesting, but likely impractical, overly complex and potentially unfair (assuming, of course, that other classes don’t get a similar degree of control over their own things; if they did, then it’d be perfectly fair).
The most ‘balanced’ method I can see for doing this involves extra UI elements, for example, and Supply Points to be spent on the various things in the Crate – as well as rebalancing/reworking of Elite Supplies X.

If I recall correctly, I once proposed something somewhat similar using, more or less, special traitlines; players would get points to put into lines that would offer customization options for particular skills, essentially. Reception was lukewarm at best.

Imo only thing what Supply Crate needs is extending of turret duration they disappear too quickly.

I would like if they replaced the heal with rocket/thumper.

Cool idea, but I think Anymras is right about it being overly complex & unfair. I’m afraid it’ll remain a fantasy.