Shirou's so glad Saber is here. He honestly thought he was going to die and or not see her again. I pulled him before he wakes up from the good end of UBW. He has romantic feelings towards Rin, obviously, but his relationship with Saber is still really important to him and she's very important to him. I don't think words enough can describe their relationship as there's love, loyalty, and partnership. He's going to do whatever he can to help her and to figure things out with her. He deeply respects and is appreciative of her more than ever. He views their relationship much more equally after everything, and even if they've lost most of their abilities, Shirou thinks their connection and relationship is the most important thing between them and that'll get them through anything.

Anyway, sorry for the TL;DR but just know I'm so ready for anything and if you have any ideas I'm always ready to hear it.