Have you seen the crossover event?
3/4 of it is just cosmetic nx cash items asuna/kirito hair cuts the fairy companion for ALO
They wouldn't confine weapons to warriors because there wouldn't be enough revenue applying thus to exclusively warriors
Oh and theres a dungeon where you play with asuna/kirito much like the heizan dungeon
I think there's a coin shop where you use coins you get for clearing the dungeon tk buy SAO related cosmeyics
And I think you need to pay for extra dungeon entries
Also betting 100 dollara for asuna/kirito androids