I just hope the character development would not be as simple as "I am a badass who smirks while I shoot guns, but one time in my past something bad happened and it makes me sad"To that end they can definitely work on existing characters to give them more than facet. They did so with Mando. Cara provides an established base to develop further on. Now, what kind of direction that may take or whether the writers would even want to give her additional character development within the context of story progression is a different matter.
I am just here for the ride given speculation feels non-productive (as the results will out entirely out of our control). Cara's character reminded me a lot of Vasquez from alien although far more subdued (her characterization by you was on point) and I liked it.
You know that is exactly what it would be :P