A few things I’ve noticed with regards to Rogue – Arcane Trickster as well as a few personal suggestions I hope may be considered or discussed.
When using Minor Illusion (whether obtained as a cantrip from being High Elf or whether chosen at level 3), the description states that “You can remain hidden while casting this spell”. However, whenever the spell is cast while “Hiding”, upon completion of the spell you lose your stealth.
This issue is not present for casting Mage Hand as even when casting this spell the player stays hidden.
For cantrips such as True Strike, it would seem reasonable considering that according to the original DND5e rules that it requires only a Somantic component that it should also be able to be cast without breaking stealth.
It is also currently not possible to possess a familiar and have mage hand summoned at the same time. However, as mage hand unsummons the familiar, it means the player would require using another spell slot to “resummon” the familiar. Perhaps it would be possible to give a second button that appears similar to the way that Disguise Self and the Speak with Dead amulet work, allowing you to “dispel disguise self” and “recast speak with dead”.