Credit After Crash
I discovered something neat the other day. Your request (while not exact) already sort of exists.
I was fighting Jormag and got bored. My guild announced the Fire Elemental was up, so I went over there and killed it. Suddenly Maw was up. Handled that in a minute.
I decided to go back to Jormag and see if I could get credit, and something awesome happened. I was halfway to Jormag when he died, and I got credit for it. Crazy!
So apparently if you can get back into the zone before the event completes, even if you’re left the zone halfway through, you still get credit.
Sucks what happened in your example, but just know that if you log in faster, sometimes you can still get the credit.
It was WvW, which was queued by the time I got back in. I didn’t have a chance, and I knew it. Once I saw that “LOL U CRASHED! SEND A REPORT NOBODY READS?” screen I knew I was doomed. I melted the paint of my living room with my cursing.
This can be improved.
Queued WvW? Guess you’re not on Isle of Janthir. I’ve never seen this thing you speak of.
Maybe a solution would be to have a “log back into WvW after disconnect” feature like dungeons have.