Mob Behavior

So, I was playing Minecraft and I just realized: Some modded (Forge) and vanilla entities just don't do lots of things...

What I'd like to be added into the game is a command to change mob behaviors... (That doesn't mean I want the command from this post: https://feedback.minecraft.net/hc/en-us/community/posts/360076384512-A-Command-to-change-Mob-Behavior)

This is the command structure I'd like: 

/summon (any mob that is either modded or vanilla) (any location) {(Any NBT of your choice),MobBehavior: "(any vanilla mob)"}

Basically, this command changes actual behaviors...

For example:

/summon wither (any location) {Invulnerable:1b,Tags:["wither"],MobBehavior:"minecraft:wolf"} 

                   ^                                                        ^                                              ^ 

This would be any vanilla/modded entity.

                                      This would be any NBT that we want.   

                                                                                              In here the behavior from any vanilla entity would be applied (If the entity has the NoAI tag this MobBehavior ignores it and when the entity is given the NoAI tag value of 0b, it would load the AI from the Mob Behavior Tag instead of the original AI)

I hope it's added!