There is so much wrong here to unpack. Let me give it a shot…
No, that wouldn't, but Servants explicitly can't be summoned to any time where their original is alive.And the Throne of Heroes is not connected with the timeline, so the fact that Taylor is still alive should not prevent her from summoning one of those.
Shielders use shields. Galahad qualifies because of his shield. Taylor has never used a shield at any time during her career.Shielder: That one is for Mash... But considering she went out of her way to protect the people of her territory? And what she did to try and stop Zion? She should qualify from that effort alone.
Battle Continuation has nothing to do with the Lancer class. Also, using a polearm all of once does not a Lancer make. It has to be a significant part of their legend.Lancer: Battle Continuation. Nuff said. And she did wield Armsmaster's halberd when going one-on-one with Leviathan.
Nor a steed a Rider.
Yes, they should have named the Class differently. Judge would have worked nicely, but the Ruler class is all about impartiality, not actual rulership (and no, at no point in canon Worm was Taylor ever impartial).Ruler: Khepri. If she doesn't qualify as a Ruler, then they should hav named the Class differently.
No, it really doesn't. The requirements for the Moon Cancer Class are as yet unknown, but I think it means something that literally every qualifying Servant released has been involved in the Moon Cell Grail Wars.Moon Cancer: This is supposed to be a BB-only class. But is Jinako possessed by Ganesha counts, then the Taylor & QA has to count as well.
Taylor already is a Beast, or at least a Beast candidate, according to WOG. Why do you think Fou hates her so much?Beast: Like Foreigner, she did have a link with an Alien in her head. If the Alien God can be a Beast, then so can Taylor & QA. Especially with the Fame Bonus Khepri should get from Earth Bet.