Sorry for the post title, couldn't resist.
In case you missed it, the ingame fitting window is getting some love. See CCP Sharq's post here for some info. TLDR version is that they're looking at bringing some of the features of Pyfa and EFT into your friendly neighborhood fitting window.
Before you get excited, CCP Karkur clarifies on page 4 of the thread that this is a "side project" and not a formally planned project.
Still, it's something I'd definitely use. The 3rd party tools are fine, but they haven't stopped me from being dumb about rig calibration a few times while shopping.
What's Playing: TOOL, Undertow, Sober