I want to ask organizers to, for the time being, add a condition that tracks for MTC should be built entirely in the game editor, and not using some external tools. At the very least it's against computer security to use unofficial software which "hacks" other software (or its data).
Blockmixing gives unfair advantage to those who use it, and Trackmania should be about fair competition (that's why racers cannot block one another online, btw).
It's already bad that those who have pirated Photoshop are able to get better screenshots or graphics for their tracks, but with blockmixing, it's just getting out of hands. The game is out only 6 months, and blockmixing is already becoming very common.
Thank you for giving this a consideration.