they 100% need a brand split, but it needs to be something completely new, aew dark can stay what it is and serve the purpose that it does as a standalone thing to give up and comers reps
their roster is overflowing and you got nikkas begging tony khan to sign half of the people wwe just released today... how much tv time you think nikkas is gonna be getting without a second legit brand?
another brand would give them more time to flesh out storylines, would stop forcing them to put random nikkas in stables for the sake of getting everybody tv time, and would better showcase their womens division, they have enough talented women now to where they all need to be on tv weekly as opposed to rotating biweekly/triweekly
lets be real nobody is watching aew dark and aew dark remix and sitting through like 14 straight matches besides hardcore fans