How to touch this one within the TOS of the board and not be medical advice...
Couple thoughts; T overpowers everything. If you take E while T is live and kickin, it won't do much.
So the matrix is really, Do I have T and T receptors functioning; if so X, if not Y.
Thus a cis-male, taking E, won't get nothing much interesting. A cis-male on a T-blocker will likely lose substantial interest and function, and may become tired, etc. If on the T-blocker, and you add E; you get E functional, with emotional balancing and female secondaries; but probably not a lot of libido.
A cis-female, taking E, simply increase risks of cancer and whatnot; and a T-blocker won't do much of anything for most. Add T, and it'll overpower the E, and you're off to the races with male secondaries.
Generally what happens.
Finding the right amount of the right piece of the puzzle is what you have docs and labs and therapists and psychs on your team for; each person will be different, what's ok for me is most likely not ok for you, etc....