I don't necessarily agree with only having that as the yeshiva curriculum because they are more important for your understanding of Gemarra than other mesechtas . All Gemarras cross reference so many subjects throughout shaw that if you were to pick any gemarra and learn it well, you would be well off.
The only reason I agree with using this as a curriculum, is because you can't teach everything . Most students are not in yeshiva indefinitely, and if the rabbeim focus on a certain subject well, then they can give a better understanding of the subject to their talmidim.
The Yeshiva gemarra's are great, but I wouldn't say that they're better than any other, nor would I say that you would benefit more than learning any other gemarra.
Find a mesechta, that you fall in love with, that you can't put down, one where you just keep on reading day after day, the same daf, in hope that you will figure it out. Everyone has their mesechta, one that you identify with as having a good understanding of that subject, and that you light up when hearing people discuss it. Once you've learned a bit here, and there just stick to one of them that you liked and make it yours.