Since it was requested we stop "polluting" the Regional thread, I'll start this one. I'd start off by suggesting the choice of the word "polluting" is unnecessarily condescending. Clutter, maybe that's close to a better choice.
I think fortressing is silly, unsportsman-like and outside of the spirit of the game. I honestly don't get why people want to win THAT bad. I mean...for bit of acrylic, alt art cards and mats? Really? Is there even prize money involved in something like a regional? I don't get why people would play like a **** for fancy versions of stuff they already own. Is the prestige and/or eBay resale value really worth playing like a ****?