I don't think he would since SG optimus prime is part of the combiner making thisure an all evil-megatron-Ish team since SG optimus prime is essentially the shattered glass universe's megatron
Since this is evil megatrons shouldn't SG megatron not be the combined mode cause why would every single evil megatron merge together to form an good guy plus is certainly your including SG optimus prime and he essential is SG megatron I feel like SG megatron shouldn't be part of it....