I do agree that speaking in hypotheticals can have us running in pretty wide circles in no time... but again, this is my thinking.
As I see it, a "TS admirer" may come in a variety of colors, but they're TS admirerers on the impetus that thay're dating a trans boy/girl -- by definition a person who carries regard, or marvels at someone born in one gender but lives/presents as the other. If I were in a head-over-heels relationship with a man -- to illustrate a point let's say -- based mostly on physical attraction, and he came to me and said, "Babe, I want a nose job" or "I want to grow my hair long" or "I want to gain 200 pounds"; I'm sure I would take issue because, again, I love him mostly for his physical attributes that I am attracted to. Now, let's say he came to me and said: "Babe, would you mind if I had my tonsils removed?" or "I want to get rid of my appendix." Hmm... I guess I wouldn't mind all that much. Sure, those are still physical parts of him, but it just doesn't matter to me whether he has tonsils or an appendix. It doesn't because I love him for reasons beyond that.
That said, I don't loath my dangly bits. I just don't care for them and yes, it is a life's goal to eventually remove them. I don't want a man who desires me for those bits. If said bisexual man (or any man for that matter) will leave me or possibly not be attracted to me when those are removed but everything otherwise stays exactly the same, then love be damned! I've never been much of a head-in-the-clouds romantic anyhoo. He may love me for a variety of reasons but obviously, removing my bits is a deal breaker (even if he is saying he's "just not sure" -- then those bits factor in waaaaay too heavily). This girl's destined for GRS and I'll find a man who couldn't care less when the "girl's" are gone.

My last boyfriend and I had an account we regularly put money into as we saved for my GRS. He couldn't wait to bid them adieu! AWWwwwwwwWww!!

Too bad he cheated!!!