I agree, to everything that you say.

I just don't know how this dead end can be turned around. Lana would need to literally become someone else, possessed for good, for Lexana or anything even remotely related to Lana to work at all.

Lana is a plot device that got out of hand. They should have made her third tier/ gone years ago.

(I love your analysis, I lurk the TwoP SV Boards.)