I’m not sure whether the underlying point is being overlooked or simply disregarded at this stage, but I would encourage you to consider the possibility that the absence of a particular anatomical feature in a fictional character may be an intentional creative decision, rather than an open invitation for unsolicited modification proposals.
Respectfully, not every creative choice needs to align with your personal preferences, and the expectation that others should accommodate them by default reflects a rather narrow understanding of creative autonomy.
I would also recommend taking a step back and evaluating the amount of time and energy being invested in this particular fixation. At some point, it becomes worthwhile to conduct a personal performance review and ask whether the priorities currently receiving so much attention are actually contributing to the individual you intend to become over the next five years.
Ultimately, I would encourage some honest reflection on whether this is a direction you will genuinely be proud to have pursued, or whether you may eventually look back and recognize that you spent an unreasonable amount of time advocating for fictional character redesigns that nobody was obligated to entertain in the first place.
I trust this provides sufficient clarity on the matter, and I encourage you to treat it as an opportunity for professional development.