Thanks for updating to OP with relevant information! I've seen both videos a while back, but they infer what's been speculated instead of full-on discussing what they think about Link being female. I guess that's a topic for them to tackle another day.
Anyway, I don't see why there would be a need to feminize Link's name for a possible female option. The name Link has asexual context, in that it refers to the Hero of Time being the 'link' to one part of the triad for the Triforce's perpetual prophecy. If anything, Linkle could just refer exclusively to "Hyrule Warriors Concept Female Link" and would characterize a separate entity.