New 'comeback' mechanic is extremely broken.

It's IceFrog not Valve. Valve doesn't do the balancing except bug fixing.

I think the new formula is good.

http://www.dotabuff.com/matches/923571666

Ya know, when you can buy a Rapier after few kills it's not as funny anymore. I think it should be fixed, there is no way I could get such a GPM with all T2 pushed, then all T3 and 2/3 barracks set, locked in a tiny map part that is not even safe anymore pre-patch. Highest GPM in game with only megacreeps available as a farm source, zero vision and no invis detection from our side, it's just ridiculous!

It still doesn't save you from ******s in your team tho, yes, I'm looking at you Techies and WD and Anti-Mage.
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Just had a ******ed game - we had a Slark mid and the enemy had a Troll. We dominated laning, etc. Were way ahead on kills. Then the enemy grouped up by necessity. There was a battle and the Troll was the only survivor of all 10 heroes, with an ultra-kill. From there on he snowballed until at the end he one-shot us with a battlefury. At one point I looked, and our Slark had a slightly better score than the Troll - by something like a kill and two assists - but the Troll had 4 levels on Slark. Plus, in all probability, more gold.

This is stupid! The way the comeback mechanic works in soccer terms is as follows: When the leading team scores a goal, it counts for one goal. When the team that is behind scores, it counts for K-1 goals, where K is score difference between the two teams. If the losing team's carry scores a double or triple kill, it can count for like 10-15 goals; except that his team is still "behind" and his next goal still counts for another 10.
So if you lead 5-0, if you marginally lose some battle - i.e. the other teams scores a goal - the actual score suddenly becomes 5-5. But if you score another, you just lead by 6-0, and are in danger of conceding an "equalizer."

It's ridiculous! The only good thing about the comeback mechanic is that, obviously, on average over enough games you are as likely to benefit from it as to be harmed by it. But the game feels completely random now. It's bad enough that the game picks your allies so you keep a 50% win-rate. But now you can completely wreck the enemy team for 30 mins, lose one fight due to high-ground/forced-grouping-up for the enemy/lucky ult/ etc - and then it's all over! The enemy PA gains 5 levels and 3-4k gold, game over gg wp no re.

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One more thing - assists are insane. A kill is worth significantly more if the entire team is there rather than just the killer. Why? I say have a fixed bounty per hero, and split it across the damage/disable-dealers.
I guess the idea is to prevent split-pushing. Make stronger towers or something. The losing team shouldn't magically gain a fortune for ambushing a warding support and the nearby farming carry, just cuz they've been pushed out of their lanes and have had to group up by necessity.

some points here, the multiplier has been rescaled down to 0.3 from 0.5.

And ^^ if your leading 0-5...use that advantage to create a bigger advantage....play safe.
I would money on you just thinking you were really far ahead, over extending.

That soccer explanation is nothing like the formula used in dota...like at all so I'm not sure how your applying that.

In my opinion since they rescaled it a little its a fantastic addition to the game, really prevents that death-ball meta with 15 min games....which sucked.

some points here, the multiplier has been rescaled down to 0.3 from 0.5.

And ^^ if your leading 0-5...use that advantage to create a bigger advantage....play safe.
I would money on you just thinking you were really far ahead, over extending.

That soccer explanation is nothing like the formula used in dota...like at all so I'm not sure how your applying that.

In my opinion since they rescaled it a little its a fantastic addition to the game, really prevents that death-ball meta with 15 min games....which sucked.

I like the new 'comebacks'. Isn't it just horrible when you're on the losing side of the match and you just keep trying but that over-farmed Shadow Fiend with the Aegis just keep killing you when you walk out of fountain? Yeah, I hate that too. Now if you turn out a good team fight when you are losing, you can still win. Seems good to me. already won tons of matches that way.

Okay but when you're losing 53-22 and the game ends 55-53 something's up.

You also know something isn't quite right when AM skills his ult at lvls 5, 10, 15:

Yeah, he also didn't max Mana Break OR Spell Shield!