Honey, the fandom exists for this reason, so we can vent and ramble as much as we want. :3

Can I just second that Welsh!Remus thing? And since his mum was welsh too so it just, you know,works! Sirius with the ties,yes, I can just picture him doing up Remus or the Marauders' ties for a fancy occasion with a 'oh my god, you noobs' kind of look.
The jumper one makes me want to write a ficlet though that will probably happen when I'm like 70 years old!Hehe!