For people who have not yet legacied, it's extra incentive since it minimizes the time spent without some of the more useful boosters.
I bit the bullet a long time ago but one of my best friends is second legacy and had been waiting for one of these events. We were both disappointed that the "Easter" event never happened (I was looking forward to helping level up in coop).
The fact that we get double XP every weekend until the end of April is welcome news!
Don't blame you mate, it's awfully hard to give up levelled up boosters! In my case, when I did the last legacies, I hadn't levelled up many of the competitive ones anyway and coop ones are easy since I play that so much.
I don't care about double XP since I don't intend to lose my Cloaked Lv3 again(especially now they've taken out Oh Snap in obj modes).
Just bring on the rare treasure drops already, or better yet, raise the chances of getting rare treasures altogether
with the exception of legacy 4 and 5, it is extremely easy to go from 1-75 in just a handful of sittings, double xp is welcomed sure, but something should come along with it (rare treasure weekend) so that those who are already maxed level or don't wish to legacy still have some incentive to play as well.
I know about booster leveling and it is a pain, got almost all of them to gold in 1st legacy, got all of them to gold 3rd legacy, and finally got all of them to gold 5th legacy as well... it was...it was hell...