"Is there an advantage?"
On one hand, yeah; I'd say getting to have early access to buying the tickets and being able to snag them so early as to not have to worry about them anymore is a distinct advantage over many others. lol
I think a lot of people would consider simple 'peace of mind' an advantage(at least i would).
"Or wait to see WHEN a 2 day ticket drops?"
I -and many others, it seems- want to see the whole spread before jumping into anything prematurely. What promotions, bundles, or offers will they release for 2025 in conjunction with Epic? Will park-hopping tickets be discounted if you are just selecting US and IoA vs. a ticket that includes Epic? Will multiple Epic days be less expensive together or with the other 2 parks included on a multi-day ticket? These are some of the basic ticketing questions i personally need answers to before i pull the trigger on anything.
And i am saying that as someone who has both August and October dates holding at Universal resorts.
I plan on doing 2 days minimum at Epic on both trips, that much i hope for.
However, I believe i will end up getting a 2 day parkhopper ticket for US and IoA for my October trip on top of my Epic and Horror Nights tickets, so i personally want to see the options there; Whereas my August trip is JUST going to be for Epic and i will spend 2/3 days there, if possible.