Just rudeness, be it rude silence or rude remarks. Bad attitude is not needed. I keep a good attitude win, lose or draw, and I hate having to sit across from someone who is being a jerk. There's been a few games where I almost just conceded because it was so excruciatingly miserable playing against such people.
But it is worth pointing out that they will be standard legal (although i doubt very much people are going to use sengir, serra, or shivan dragon in standard…but still!)
Best format is also the least played: Highlander (not EDH/Commander, but plain old 100 card singleton). If you've never played it, you should check it out. It's awesome.
Most people strategically trade the cards that are rotating out for ones which are not. If you have a lot of people to trade with, you can retain most of the value of your cards and stay in standard without reinvesting a lot.
Others transition into formats like Modern, Commander, and even Legacy. Since cards never rotate out of these formats, taking them up instead of standard is a lot more cost effective in the long run, and you get to keep playing your favorite decks without them ever expiring.
You might find this video helpful, as it answers most of your questions: http://youtu.be/FZ2tMSQcBr0 "How To Double-Sleeve And Why"
More than anything, the purpose is for protection of cards that have either high financial or sentimental value. It keeps them in as protected a state as possible.
Can I double-sleeve with perfect fits in Legion sleeves?
What are peoples' opinions on Legions?
Legions are very strong, but avoid the glossy sleeves and go for matte.
They can work with double-sleeving, but it is very tricky and not ideal and I don't recommend it. For single sleeving, however, they are awesome. Again, stay away from the glossy and get the matte.
But I bet it'll just be "The Return of Dragons!"
Ill settle for Damnation and Wrath with rad art.
Oh, man, now you are just making me drool. And with alternate art? Would be rad.
I don't see why we can't have both. I like it more when these products have multiple needed reprints instead of just one. Heck, add a third!
I also wish they'd give promos of value and use in standard but that we can't use in our limited decks.
Hopefully, they are going to do a good job with these, given the effort that clearly went into M15. Very curious to see what they offer.
I don't think they are going to hop back in time in the storyline, as interesting as that would be. They worry too much about confusing players.
Most people strategically trade the cards that are rotating out for ones which are not. If you have a lot of people to trade with, you can retain most of the value of your cards and stay in standard without reinvesting a lot.
Others transition into formats like Modern, Commander, and even Legacy. Since cards never rotate out of these formats, taking them up instead of standard is a lot more cost effective in the long run, and you get to keep playing your favorite decks without them ever expiring.
More than anything, the purpose is for protection of cards that have either high financial or sentimental value. It keeps them in as protected a state as possible.
Legions are very strong, but avoid the glossy sleeves and go for matte.
They can work with double-sleeving, but it is very tricky and not ideal and I don't recommend it. For single sleeving, however, they are awesome. Again, stay away from the glossy and get the matte.