Your ability to summon Servants has greatly increased! The Servants you can summon with the Saint Quartz can now be from any universe, instead of a singular one. If you ever have a specific setting in mind, you are able to lock in a setting for a week. This would allow you to only pull servants for that setting for said week. After that week is up you may change the setting you are pulling servants from to a different setting, or back to any/all.
Eventually you may gain too many servants and not know what to do with them all, so now you will also be able to summon and unsummon them. When they are unsummoned they will return to your own personal 'Throne of Heroes'. Each Servant having a personal room of their own design. Made perfectly for each individual Servant. In this 'Throne of Heroes' time will lose it's meaning. Allowing you to go centuries without resummoning a servant, but only feeling like a day for them. Your Servants are able to interact and communicate with one another in this Throne of Heroes, and should you desire it, be able to communicate telepathically with you. Although this connection can be turned off and on at will. Should a Servant die, they will return to your 'Throne of Heroes' where they will slowly resurrect and heal over the span of a month. This time can be sped up by using Saint Quartz on that individual Servant.