I don't understand why people want Garchomp back in OU. Am I missing something here? Is there some sort of niche that Garchomp must fill in order to balance out the metagame? If there's a Pokemon which is so broken it needs the likes of Garchomp to be reintroduced into OU to quell it (which there isn't), why not ban that Pokemon itself? But, as I just said, such a Pokemon doesn't exist.
the reason to let chomp back into OU is simple: if a pokemon has no reason to be banned, why keep it banned? shouldn't we want to keep banlists as short as possible? we shouldn't be looking at a pokemon and saying "unless anybody has any reasons against, we're gonna ban this shit". otherwise shit like magcargo would be all that's left in OU. we should instead be asking "if you want this shit banned, you better step up for it". nothing deserves to be uber, and nothing deserves to be OU either, but the impetus should always be towards letting pokemon down and then deciding if they need to go back up. ESPECIALLY in the case of a mon like garchomp that was banned quite a few metagames ago.
and again, sand veil is not being considered on the ban table because we want garchomp back. it's because sand veil is haxy and uncompetitive. garchomp is being dropped as a consequence of sand veil being banned, because one of the primary reasons for it to be banned was sand veil in past rounds. the previous ladder already tested chomp without veil, so the question is now whether or not veil is okay... a question to which there are many answers, but none of them have to do with garchomp directly.
seriously can we just leave something along those lines in the OP? because EVERYONE seems to think "we just want chomp back omg it's our precious baby let's ban everything so that chomp is legal again because it's our precioussssssssss"