nah, i think the hardest part of the waitingtime is behind us, so those few months more aint gonna hurt that much. and besides with each week that passes, your chances of getting a beta key incease! so that at least a little speck of hope.
also the playable beta content is very limited and you dont really get to see much of the new stuff, they also said that they wont be adding any more content to the beta(d2 beta was also just act 1 if i remember correctly).
ofc having the beta is better than not having it, but after a week or so you will find yourself bored again, i dont see the difference in having this joyful week now or one or two months later .