What event for revan?

At best he will probably just get a Marquee. He isnt in canon, and isnt a main trilogy star. Nor is he as well known as any of the legendary heroes right now. Hes not on par with any of the character when it comes to A heroes journey as they are the biggest character in each of their trilogies, whereas Revan is just a game character (popular, but still from an audience standpoint still less well known). If he did get one then expect it in at least a year as Anakin has yet to have his own heroes journey.

As far as legendary characters go, hes not as well known as any of the others that we have, but possible in the future I guess.

Also something to abre in mind, his event has nothing to do with how strong the character is in star wars. Palpatine was recorded as the strongest sith in al time yet he worst than a blind monk.