Hmm, I guess I have a question, about projection specifically. I know at least that most magi stay away from using projection because it's impractical for the prana cost and the amount of time said projection can be maintained because of that, but is there anything more specific on those limits? I would imagine it to be more difficult to create something with more intricate parts, or something larger, but I'm not sure to what extent.
To approach my question from a different angle, about how long would someone of Rin's calibur be able to maintain a rubber ball, a sword, and a motorized vehicle respectively? I would imagine that that last one would probably kill her at least after a short period of time, but that's been contested recently, so having a lore master taking a look at it isn't a bad idea.
Also, did Extra Material do anything to clarify for sure whether the Nameless Hero/Extra's version of EMIYA is contracted to the Moon Cell instead of Alaya? I'm pretty sure that it's true, but I just want to be sure.