With totem you solve all the LOS issues dolls give your allies.
And no, you can't just give us control of dolls and call it a day. You have to standardize the cost to summon dolls and revamp half of the dolls (yes, madoll, lethargic, and blocker doll are so far behind. Blocker doll is ok but in a new world of the new dodge/lock changes they're not what they used to be). With 1MP they're only useful that first turn.
You see how many things I listed already. Then there's the air branch and stuff like fertilizer and earthquake spells.
Oh but not done
There's also explodoll and doll link
I don't know if I would call all that little tweaks.
Of course ankama will revamp osamodas first and every easy class they can think of before sadida. From what I see it's a class that isn't played that much in the french servers.