I'm sure that I won't reach my target audience with this comment, but here's trying:
If you want to play against faster players, set your preferences to a tighter window (if possible, one that doesn't include levels 1-15). Also, don't reject everyone you come across that's ranked higher than you and still expect everyone to play fast.
I find it infuriating when players in the high 20s repeatedly reject automatches with me (I'm low 40s). +/- 20 is often the only way I can get matches. +/- 20 for you, unless you're willing to accept on the top end of the range, is just a cheesy way to beat up on novices.
I second this. I also play +/- 20 (otherwise I'm waiting for a while), and I get angry when I get rejected multiple times. If you aren't going to automatch, then get out of the queue.
There is one player that I avoid on isotropic that I frequently run into via automatch. As soon as I get automatched with him, I immediately get out of queue and wait for him to get matched otherwise.
If you don't want to play with me - then get out of the queue or set your range to a reasonable level.
As for the original topic of slow play - I do find regular slow play to be irritating. It's ok if we're having a friendly conversation about the game, but I'll admit to not wanting to play with someone who regularly takes an extended turn (spending some extra time at the beginning makes sense)
Of course, I'd probably be a few levels higher if I stopped to smell the cards once in a while and thought about it instead of just auto buying.
Generally - if you're a slow player - then just tell the person you're playing with. One game isn't going to ruin my day, and I'd never tell you to play faster n00b.... that's just rude.
For the first minute - before you start - say "Taking a few minutes to size up the board - ok?" Most players are polite about this. The ones who aren't? Well - be thankful for the free wins.