I'm curious to know if anyone is actually spending rare candy though- is there anything that's worth it?
The only possible case I think is Chansey, but even then you don't really need more than 2 Blissey in this game.
Tyranitar you can get 20 candies at will at a raid. Snorlax candy you can get from a raid, and is no longer than useful now.
Dratini candy is relatively easy to obtain compared to the options above, and with the rumours of it being swapped to raid boss, it's another 20 candies at will every raid.
Legendary candy, while theoretically 'worth the most' (given otherwise you need 20k for one candy), is not the greatest expenditure either for this meta.
So, I assume everyone is stocking up on candy anyway...hopefully