Still going with fates. As for the write-in;
[x]Lend me your Servant for the war in Britain. Kidding but, having Saber witnessing a conflict there would have been interesting.
[x] Ask access to Mahoutokoro tree's ofuda.
Whether Kirie can obtain some for Shinji or simply put in a good word with the maiden, is fine.
We will need high-end skills sooner or later.