It seemed that rather than have Saber suck some souls, that he was going to find the real Excaliber (I didn't notice any appreciable difference though, I probably wasn't paying enough attention).

If he materializes the sword, perhaps that will solve Saber's Mana problems. Maybe it's even an issue of his improper summoning.

Also, Ilya is rather...forward with Shirou. Despite her young appearance, she's really after Shirou, isn't she?