It's kind of standard to expect a c-bet by the pre-flop aggressor at 90% of pots. I think this is one of the biggest mistakes, when you're already quite short in general, you can't afford to be making c-bets then folding your
hands, an example would be 20 or so blinds, someone opens up quite loose, c-bets regardless, gets called then end up check/folding causing them to lose 20-30% of your stack. People will often still be raising it up when they should be shoving but scared to busting so raise minimum for example, they are easy to spot and usually you can buy the pots from them (if it's bubble time)
People have an idea that a big stack is the way forward in the early stages so that's why you often see people with huge stacks, but fail to realize this is actually irrelevant to a degree. Of course having a big stack is nothing to turn your nose up to but I think again people will often get it in bad, risk their tournament life on something that will have a "little" edge on field. Playing tight is right in the early stages and your edge will be much more valuable as opposed to the donkeys trying to achieve that huge stack if you loosen up and become aggressive when it really matters.
Again, a lot tighten up on the bubble and I used to be one of those, but I'm not so much bothered about cashing as it's meaningless and you just about get your buy-in + half again at best most times. I'd sooner push on those who are scared and build up a huge stack prior to the bubble bursting and then it's time after the bubble to make well timed shoves hoping to double up a couple of times to be able to get a greater stack.