Wow! A hundred more damage per round?!? Holy cow! Yeah, I totally agree! That's broken AF!!!!
A whole party doubling their attacks?!? Oh noes! That's scary! Yeah, I totally agree! That's broken as all heck!!!!
Oh god, yes. It totally is. Always. Regardless of context or efficacy.
It doubles average damage?!? OMG, I had no idea! Then yeah, I totally agree! That's broken for days!!!!
Yeah. It's exactly as optional as Linguist. Another broken feat. Good thing they are both eqully optional, amIright?
A side conversion that would likely not have bloomed had folks such as yourself not taken the thread off topic, in the first place, with claims that the feat is objectively broken for everyone. Ownership can be a sour fruit, can't it?
I'd love to hear your opinion on how much you believe your post here contributes to the OP's topic...
This is why I would prefer farts, they would stink less than your sarcasm, there would be more value in them.
An extra attack with a 2 handed weapon is very powerful in a game where a berserker for example gets one as a class feature at 3 lvl only usable with a rage and with the exhaustion penalty. The classes get a reliable attack at lvl 5-6, 11, 20., appart from that you have some class features or TWF. On average the players should kill an enemy in 1-2 rounds of combat, that could be an extra attack each 1-2 rounds.
2 handed weapons have a damage threshold of 1d8-2d6, the potential of 10 more damage is near the potential of 2x the average damage per attack. The drawback is -25% to hit, the party and the player have many ways and buffs to improve their accuracy, the damage curiously is only increased for some classes with spells like Hunter's mark to remain competitive. +1 STR can give you +5% to hit and STR saving throws, +1 damage, +1 to STR ability checks.
A battlemaster can hit 9 times per round at high level, more with this feat and buffs. That's a potential of 100+ damage. Not sure what kind of parties people see in their games, but I've played in one with a Barbarian using the feat and a wolf totem giving advantage to other guys, a champion with the feat, a paladin with the feat, the war cleric was already thinking on choosing the feat for laughs and an assasin that always killed the enemies of the barbarian. Sometimes we cleaned the room in the first round, big baddies as soon as my barbarian was there were dead but they didn't know it. At high levels it was going to be far more damage than the same party without the feat, and I say hundreds, people can make their own maths because you don't have to play to see where it was going, and can read the monster manual and see the HPs of monsters.
There was no balance there, increasing the difficulty of the encounters could be deadly if we got surprised.
Linguist? Tell that to the designer of the game or open a new thread for help balancing the feat.
I'm sure I'm not the one who derailed this, I'm only tired of reading always the same guys pivotating about the same thing without providing any numbers, or suggestions or anything, curiously you are present in most pages, so I'm not surprised. My contribution? Soon zero because this is a lost cause, at least I've presented my numbers instead of parroting is ok or not without any reasoning beyond "someone thinks the sun rotates around the earth so it is a fact", at this point I'm sure the only purpose is to derail the thread and waste everybody's time.