[@KawaiiKyouko] I won't allow sharing pain as it is. Though very much conditional it allows her to use things from other servants that would be especially powerful. Case in point Arthur's Mana Burst, or Astolfo's Monster strength. Those are just our own current abilities we can share. If we face Emiya she could potentially use his unlimited blade works against him. If it's reworked so that she gains a small stat boost (+) from fighting along side someone she deeply cares about that I'll allow.

Affections of the Holy Grail doesn't work the way you're portraying it as. Kiritsugu's ability grants him bonuses in luck. If you want to make it so that she gains a rank in charisma when talking to people who aren't under mental pollutant that is fine.

Chloe has not shown any ability to 'teleport' I can't allow that in.

The Noble Phantasm I have issues with because even if Matthew joined in with her I don't really understand how that would unlock extra stuff like Gae Bolg's abilities for example. If you want a watered down version of unlimited blade works that is fine but I can't allow you to basically recreate any noble phantasm on the spot with his help as that cheapens the other heroes.