Strong mathematical analysis going up in here.
So you want to improve, a better mindset than most. Here's a few habits you might want to get into that aren't already mentioned in this thread:
1. Thinking of Efficiency: HoN by its very own nature is competitive. Therefore, you need to outfarm, outlevel and outplay your opponents to increase your odds of winning. Efficiency is generally measured in gold per minute and experience per minute (especially true for carries) so it would be wise to try to maximize those. Whenever, you're in a game just think to yourself, how can I be getting more gold and experience?
2. Conceptualize: In other words, think ahead and see situations occurring before they happen. That way you can react to them before they happen. This goes all the way down from moving away from allies before Hammerstorm throws his blink + stun to monitoring the damage done by creeps and enemy last hitting patterns to perform better in lane.
3. Picking Appropriately: Some games (especially in pubs), you are going to need to play support. and other times you're the one carrying. You need to assess where you are in the team and the hero roles that you can play best. Hero picks can make or break games so choose wisely!
4. Communicate! This is something you won't get from replays. You're going to need a microphone if you don't already have one if you want to be competitive. If you're losing your lane, say so. If you reckon you can get a kill off, let your friend know. If someone goes missing from your lane, let people know. If you're not ready to push, tell your allies. You get the idea.
There's a whole lot more than that but this should be more than enough to dumpster pubs. Remember that everyone above 1700 has to win with multiple bad players on their team, so if they can do it, so can you.
Best of luck!
Posted on Sunday, 29th January 2012