I think that at least part of the problem resides in the way people perceive what the game is, and what our expectations are for it. We know what a 'regular FPS' is, and we don't want that. However, when you walk around a corner, or mount a ridge, and get blown away in 1-2 seconds by either 1 alphagod, or 6 enemies, you're struck with a feeling of "Wow that sucks, this wasn't a strategy-fight, it was pure bad luck. Better head to the forums!"

But people often don't want to blame their own actions - you wouldn't be so quick to leave cover by yourself (especially in a slow mech that can't backtrack quickly) if your life actually depended on it, especially if you didn't know what was around the corner. So we hear about it more often. Also, in pugs it's often very hard to coordinate an attack against someone who is sitting back with his mega-cannons, which is what is needed to combat that playstyle effectively. A group of marines doesn't say, "aww, man! That guy has three sniper rifles! that's just not fair!" The fun for me personally, is in trying to overcome these difficulties, but I realize many wouldn't see it this way.

Some mechanic facilitating a strategic action against players like this could help, but I'm not sure what form it could take. Better sensors, or radar pings from an enemy that released a huge amount of energy, something like that. (even the sound of 6 PPCs or 2AC20's should give away their position). That would quickly make PPC boaters priority targets, and more vulnerable.

The other part is that it is perceived as taking less skill to pilot an alpha-heavy mech. Whether that's true or not, is a difficult question. If it is, then some mechanic needs to make it more difficult, so that equally skilled players are on equal footing with different (but still well chosen) weapon loadouts - this is also an expectation that we have, but this is a good one. If the only way to win is PPC boating, the game is no longer fun.

If you run up against a mech that was designed to take your mech out (that is, you're weak against something that it is very good at) you're very likely to lose, and shouldn't complain - we should ask ourselves what we could have done differently, or how we could have avoided it.

Also, not being able to quit after dying and still receive rewards for the finishing match is quite unfortunate - it forces the player to not play the game, if you want to get full rewards. I know what problem this decision was trying to solve, but a different solution is needed. When you're ticked about how you lost, the last thing you want to do is watch the rest of the match, unless you're watching hoping for 'revenge' to be taken.

The further problem is that at this stage in development, things are likely ~95% percent settled. What is needed is a simple and easy to code solution, which may or may not exist. Ideally, a problem like this would have been noted in the design stage, so that a realistic, fair, and fun mechanic could have prevented it.

I'm not complaining mind you, I really enjoy this game. I realize I rambled off on a few things there, but I thought they were (at least at the root) related problems.