Great, I'm a long ways away but is it the same for L50?
With the changes to Biochem, top-tier end game is not as powerful. That does not make it useless. But an argument can be made for switching to a craft that allows for augments. Really depends a lot on what you plan to do.
I play for story and 80% solo PvE. Once I hit 50 I tend to make stuff for lower level alts. I find end game content mostly grinding and little story.
Now my first 50's (Sith Sorceror, Sith Juggernaut) levelled up without Biochem. And never bought a stim or medpac. So you don't NEED it. But it sure makes it easier. Having that edge has meant the difference from a narrow victory to waiting for a rez.