The Channel 4 logo doesn't need changing, it's one of the best TV logos out there, it's been around nearly 40 years and it's still not outdated. A good logo design is one that's timeless, the recent Channel 4 sister channel rebrand logos really show that there's still a lot of life left in the logo. The only thing Channel 4 has done with the logo is adapted it to a fresh and modern design on each rebrand iteration.
Comments like this annoy me for one reason: why would you want to limit creative thinking? Nothing posted in The Gallery is ever going to be in contention for something seen on screen. I'm sure things posted previously have been seen by certain people and may have inspired certain looks - but by pressing submit on a mock, you are not entering it to be the next Channel 4 logo.
Therefore, what relevancy does it have that the current Channel 4 logo "doesn't need changing"?
Personally, I see The Gallery as a space to allow creativity that UK TV on occasion lacks, to experiment, and to see if we can create something exciting, or build on our work.
Shutting down someone's design because someone once created something better strikes me as massively illogical.