So i had this idea earlier, what if we make souls/shouts expendable?

The idea at its core is quite simple, since dragons keep respawning, eventually a player will have far too many souls to do anything with.

The player would use the souls as a fuel for more impressive magic/shouts possibly implemented when the CK comes out.
Makes the idea of hunting dragons alot more interesting in late game, and makes it a rewarding experience for the player.

I think another good idea would be to make it so the player can choose weather they want to absorb the dragons soul or use it to fill a "master" soul gem, and that gem would make it so you can put any enchantment on any equipment, or something like that,

That might be interesting, although i think having any enchantment on any equipment is a bit overpowered and has too much potential for abuse. But i think to have the ability to have a dragon soul in a gem could be interesting if implemented in unique ways.
Like more powerful enchantments, or new kinds of enchantments.

Or maybe you could choose to use the souls on shouts you already have to shorten the cooldown timer, give it a limit, maybe you cant go lower than 15 seconds or something.

I dunno, could also be a little op, just trying to think ofa way to make them usefull after i have the shouts i want, i know theres certain ones my big nord grizzly bear wont want or need.

I like your idea tho it would add another angle to being a "dragon hunter"

Better yet, why not have each soul capable of reducing the cooldown of a Shout by 1%. Would take a hell of a lot of souls to make this imbalanced, and by then you deserve to have close to 0 cooldown on all shouts.

Might not be a bad idea if it was capped at 50% max. Even then with some enchantments it would get close to 0 cooldown. Thats just way too imbalanced.

There has to be a 10 sec cooldown for most shouts otherwise it becomes an easy spamming tool.

But your idea isnt bad, you could get buffed depending on how many souls you have, not enough to make it imbalanced, just enough to make you feel more powerful. In conjunction with my idea, it would make a quite interesting play of balance between soul "buffing" yourself, and using souls to do powerful spells and shouts.

Smelting with dragon souls and making new types of armor with the ingots might also be interesting, maybe adding permanent enchantments to whatever you craft.

Nothing too powerful would be allowed however, as to not make things too easy.

I think that using Dragon Souls during the enchantment could be used as a method of applying Dragon Shout powers to weapons. Very few charges but quite powerful. Maybe using a special apparatus to combine two or three Dragon Soul Gems together to create an enchantment of a level one, two, or three Shout on a weapon. For example, a sword that, when swung at an enemy, activates the Ice Form shout on itself, freezing the enemy solid. Or, a mace with level three Unrelenting Force on it, causing each hit to send the enemy flying away as if you had used the Shout. Like I said, very few charges, so you can maybe only use it ten times before recharging, to prevent it from being insanely mega overpowered, but I find it an intriguing idea nonetheless.

Summon Bee Swarm

How could it reduce it to 0 cooldown? There are no effects that reduce shout cooldown except for the Amulet of Talos, unless I've missed something, and you can't enchant items with the Fortify Shouts enchantment yourself. Even praying at a Talos shrine doesn't Fortify Shouts (well, it does, but it's a 0.2% reduction, so not a big deal).

So the smallest the shout cooldown would get would be a 70% reduction. Makes it so the shortest-cooldown shouts (about 15 seconds) would be useable again in about five seconds - not too terrible, and would make Shouting much more useful.

I like the idea that more souls = more Fortify Shout. Another idea I had was to create a whole new skill based on Shouting; it'd work like any other skill, where you get skill bonuses for Shouting. Higher skill means lower Cooldown, and you could have different Perks in the skill tree for things like 'Increased Damage', 'Longer Duration', maybe some reduced cooldown on some specific Shouts - basically, methods to specialize in specific types of Shouts.

Edit : got the idea wrong, sorry !