Give the class that gets more dolls for cheaper (Fused) the ability for a lower cost on use and the class that gets less dolls (Spirited) a stronger version of the ability.

Also, looking at the rewards of the two Upgrade and Prestige classes... they really need to be looked over. I'd prefer to do more to make a clear distinction between various Bount archetypes and have the: 1) Bount with many dolls, 2) Bount with some dolls that can fuse, and a new 3) Bount with a single yet powerful doll.

Like:
Fusing Bount
Bount: Gets a doll with same Reiatsu as Bount. Doll gets a new profile ability every 100 reiatsu.
Bount -> Fused Bount: Fuse Bount and Doll permanently. Bount continues getting fused doll's profile abilities. Doll creation cost stays at 30.
Bount -> Fused Bount -> Unified Bount: Gains a new doll at X Reiatsu. Able to temporarily fuse with another doll.

Single Doll Bount
Bount: Gets a doll with same Reiatsu as Bount. Doll gets a new profile ability every 100 reiatsu.
Bount -> Spirited Bount: Bount and Doll get a stat bonus (similar to what the Fused/Controller Bounts would get). Doll creation cost rises to 40.
Bount -> Spirited Bount -> Master Bount: Bount is able to craft a Legendary Weapon. Doll starts getting new profile abilities every 50 Reiatsu instead of every 100.

Multi Doll Bount
Bount: Gets a doll with same Reiatsu as Bount. Doll gets a new profile ability every 100 reiatsu.
Bount -> Controller Bount: Gains another Doll for free at X Reiatsu (same amount Spirited gets). Doll creation cost drops to 20.
Bount -> Controller Bount -> Puppeteer Bount: Choice of Army of Dolls or Solidarity. Has the option to Equalize if they wish.

Equalize: The stats of the Bount and all Dolls are added up and divided evenly between all involved. In case of decimals, stats are rounded down.
EX: Bount @ 250 Reiatsu, Doll 1 @ 400, Doll 2 @ 300, Doll 3 @ 250, Doll 4 @ 200, Doll 5 @ 100. Player chooses to Equalize, so 250+400+300+250+200+100 = 1500 / 6 = 250. Therefor the Bount and all 5 dolls would have 250 Reiatsu.
NOTE: Simply because of the nature of creating dolls and how dolls grow, this is for people (like me) that hate having dolls that are stronger than the Bount and have multiple dolls with various Reiatsu levels. It's not forced and doesn't take away one of the reward choices: this would purely be a preference option.

Army of Dolls: Bounts of a certain level gain the ability to control specialized Dolls which will remain faithful to them no matter what the circumstances are. A Bount will receive one Doll for every 200 reiatsu they have and these Dolls will have the reiatsu of the checkmark they are created at. These Dolls do not grow with the user but will be created with the same number of Doll Abilities that a normal Doll would have at the same reiatsu. A Puppeteer Bounts will stop receiving Dolls at 1000 Reiatsu.
EX: Going Prestige at 250 means they'd get a 200 Reiatsu doll. When they hit 400, they'll get a 400 Reiatsu doll. At 1000 they will have gotten 5 dolls from this ability.
NOTE: This was taken from the original reward and nerfed a little bit, because otherwise they would get between 10 - 14 extra dolls. Even without their reiatsu increasing, I find that too much. This is a path for a Bount with many dolls to get even MORE dolls.

Solidarity: The user, either the Bount or a Doll, is able to add 1 of their stats to 1 targer, either the Bount or another Doll, up to a max of X (I'm thinking 1/4 Reiatsu). A Bount or Doll can only be the target of 1 Solidarity (you can't have 3 dolls use Solidarity on the same target) and once one of them uses the ability they can no longer be the target of it (so you can't have Doll 1 buff Doll 2 and Doll 2 turn around and buff Doll 1 back). This is the only ability the user can use this turn and it can not be used if another ability has been used this turn. Has an X Gaia post cool-down.
EX: 300 Reiatsu Bount has 100 STR and his 300 Reiatsu doll has 100 STR. The Doll uses Solidarity to boost the Bount's STR by +75 (100 is more than the 1/4 of 300 limit). The Doll that used it can't use anything else that turn (or can't use Solidarity if they used anything else previously) and the Bount can't be the target of Solidarity from another one of his dolls. Also, because of the limit, even if the Bount tried to use Solidarity on another doll, they'd still only receive +75 despite his STR being 175 now.
NOTE: This is something similar to what I had on Dominic (my only Bount) before. This would be for the Bount with many dolls that already has as many dolls as they want.