I strongly oppose any potential new rule that would make this game harder than it already is, be it a rule for during the main body of the game or the Final Fight portion of the game or both. And this includes opposition to the proposed rule for the Final Fight where you cannot spend more clue tokens per round than there are seals on the board.
One argument that is sometimes used in favour of this - and equivalent - rules is that it is "not thematic" to be able to shoot Cthulhu with a Shotgun. I think there are two valid responses to this argument, the first being simply ... so what? It's not thematic for a game about war to have the Queen as the most powerful figure on the battlefield, but Chess is still exceedingly popular. It's not thematic, in a game about property tycoons, to win $10 in a beauty contest but I don't know anybody who refuses to play Monopoly because of this. Arkham Horror is first and foremost a board game, not a roleplaying game - therefore adherence to the setting and the "theme" should be secondary concerns to the game play and, simply put, the enjoyability of the game itself.
Secondly ... I actually also disagree with it being "not thematic". I think it IS thematic. For me, this game is about H P Lovecraft's stories (and August Derleth's stories, too) and having read several of them it is VERY thematic to physically assault the Ancient Ones. *quick spoiler warning for the original Call Of Cthulhu short story* Cthulhu himself, in his only actual in body appearance, is driven off by having a steamship rammed into his head. So I fail to see why dynamite or a magic sword would not be thematic. I realise that some people want this game to be a board game equivalent of the Call Of Cthulhu roleplaying game, to which I say why? Why should it be based on a spin off of the original stories and not the stories themselves? Personally, I've played the roleplaying game a few times and, while a good game, I much prefer the original setting where you do actually have some chance against the Ancient Ones. Not much of a chance, I admit, but some. Which bring me back to my point about about the theme needing to take second place to the playability of the story and/or theme.
Moving on from the "not thematic" arguments, I would argue that this game is already hard enough. Even in the Final Fight. If you look at the results stats that Tibs has been accumulating for quite some time now (and hopefully will continue to do so for quite some more time, too!) you'd see that for 20 of the 24 Ancient Ones, Final Fights against them result in defeat for the Investigators more than 50% of the time. For some of them it's over 90! How much harder should it be? As I said above, nobody wants to play a game in which they have no chance of winning. I think the stats already show that this game is hard enough. I can't fathom why some think it should be harder.
But they want it harder, so OK ... the idea of house rules or variant rules can be used to accomodate their wishes. But this game is already hard and complex, teaching it to new players is already an uphill struggle. Adding in more rules is only going to make it harder for them and make them less inclined to want to play. As it is, Innsmouth was so hard that some regular players I know refuse to play with it unless it is heavily diluted with lots of other expansions. For them, this game is ALREADY too hard. I can't imagine how they'd react if a new rule was introduced that made it even harder - and with no way to dilute the effect of the new rule.
I would imagine that those who have been playing this game for a while now have had games where, during the main body of the game, nothing has gone their way. Gate bursts have ripped away the few sealed locations you've managed, multiple "double doom" mythos cards have come along, rumours have added even more doom tokens, and the Innsmouth Look suddenly rips away your best hope ... so despite all your best efforts, you get to the Final Fight with 1, or even less, Elder Signs on the board. You're only hope is to make this Ancient sucker pay ... but you can't because you're not allowed to spend the necessary amount of clue tokens. So you all die. Gee, what a fun game. I'm so glad I spent 3 hours this evening just getting whipped over and over and over again ... That's not a fun way of spending an evening with friends. Having a tough challenge, yes. Having an impossible no-win three hour slug-fest, no.
All the arguments I've outlined above are general arguments I would apply to any attempt to make this game harder than it already is. The following argument is specific to the proposed "clues per elder signs" rule. As far as I can tell, this rule is being proposed because of the shotgun and/or Joe Diamond. If that's the case, then create rules to deal with those two cards. Don't create a rule that makes it harder for EVERYBODY. It's taking a sledgehammer to crack a nut. Ban the shotgun, errata Joe Diamond, fine ... but hurting every Investigator with every weapon just because they COULD be Joe Diamond and that weapon COULD be the shotgun? Overkill ...
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