Viana do Castelo
I'm sure I'm not the only one who did this, but since nobody mentioned it here, I'll share it with you:
All you need is four standard sized premium sleeves (65x90 mm) for the university cards - I used Swans.
First, they're now protected (mine already came a little scratched - out of the box - and even the painted foil started to peel off of the cards).
Second, and this is my favorite part, the builders now conveniently fit right behind the uni cards - into the sleeves -, which is rather handy since they're supposed to stay there until the end of the game.
And that's that, nohing special, but something that I think improves the game just one teeny little bit.
(Now of course this will only work if you don't intend to sleeve the builder cards, but I don't think the game needs sleeves that much anyway.)
this is something that already has crossed my mind but never did it... maybe until now