So this has been a thing for years now, and TAStudio is slowly outrunning TASEditor in the amount of its features. As its current developer, I always apply my personal needs that rise from actual TASing, as well as user requests that don't sound insanely complex.
But one question keeps bugging me, ever since AnS released TASEditor 1.01: how many people are actually using it, how many will use? How many started from it and don't want to learn the traditional way of TASing? How many switched to these tools from the latter?
It's also odd that TAStudio still has no manual, so all of its features users mostly find by trial and error. But partly it's because we already have a manual that covers most of the essential features of such high level TAS tools. It's the TASEditor manual AnS wrote, it lucidly covers its features in their entirety.
http://www.fceux.com/web/help/taseditor/