Doublers Like the previously mentioned Throne, there are all sorts of ways to double things, whether thats doubling ETB triggers with Panharmonicon effects, counter doubling, token doubling like Doubling Season, or even creature doublers like Reflections of Littjara
For me, Emrakuls ban is about preserving the games integrity
Sticking them on tokens furthers enhances that resiliency
This allows them to attack the turn in which they were played, and it also provides artifact-based mana dorks such as Myrs to be used the turn they were cast, significantly improving their value
Even if my opponent can block and kill my guys in combat, I can suicide them and then Return to the Ranks to get them back, ideally using some Raise the Alarm tokens to help