Played a 7th level one-off adventure earlier in the week which included an oracle and a witch. The witch character seemed to be pretty balanced by and large although the slumber hex proved exceptionally powerful against every giant we met.
Stats for familiars such as foxs are going to be necessary for the final, we just averaged a few similar familiar creatures but it was a bit of a pain.
The only other item of complaint isn't really a witch item but rather a to do with the spell black tentacles, the witch used it and it overpowered a throng of rogues way too easily in my opinion. It seems appropriate as a witch spell but overpowered as a spell in general.