Ironbear24
Senior Master
As for the benefits, as Jow-Ga stated, this will hopefully push more traditional styles to step up and prove the fighting prowess of their system.
The rule set doesn't matter because they are similar enough to get the point across. With kudo and sanda you are striking hard and grappling hard. As for the bjj I honestly see none of it with Cung Ii, he spends all of his fights on his feet. He was probably introduced to it but like the majority of fighters in today's time don't touch it.
Most TMA has done this already, the issue with you is whenever this is done you suddenly begin calling them an MMA.