Thank you, this is a very nice to have tool in N++. If anything, I'd note that it's a bit awkward to tell which file you're looking at plotted if you have multiple ones open in N++. The plotted file being colored/styled does indicate which one it is, but that's the only way I found to tell, and with many files open that could get tedious.
The other small drawback I see is that there's no way to combine multiple files into a single plot - but that would probably be a lot of work to do anything about. I usually split various phases / tools of machining into separate files for my GRBL-driven mini desktop mill, which is why being able to load and plot all of them together in NC Corrector is something I use a lot. But that's just icing on the cake...
Other viewers I use are Camotics, NCSim and the CNCEdit Basic CNC Viewer. There's always something one of them does better and when in doubt, I get to compare "second opinions" - but in the end I'm just a hobby user with unsophisticated needs...