You're not at all forced in the slightest. In fact, all the charms do is give you a bonus roll. It's not mandatory for loot, or for raiding. It's a bonus, and this wasn't around until Mists of Pandaria, so what you're complaining about I've no idea. This is a system that, in effect, gives you another completely fresh roll of the die. And you get to do this 3 times in a raid, to my knowledge.
Think of it this way: you're in a dungeon, and you have someone that Needs on all the gear. A piece that benefits you drops, and it doesn't benefit the other person. Now, this person is immortal, is in every single party who PuGs and is more important than you. This person wins the roll by 1, BUT if you want the gear, he will do you a deal: IF you win any of his 3 /roll100's, he will hand over the gear. If not, he keeps it.
That is, in essence, what the coins are doing now. They're resetting the numbers out of 200, and the loot is on a certain one, in a similar fashion to Roulette. You throw the ball into the roulette wheel, and if it lands on a loot tile, you get it. If you land elsewhere, it's gold.
There really is nothing else I can say to you except "it's a bonus, what else do you want, jam on it?". If you hate dailies that's your own fault, and you clearly don't want a certain drop of a few Lesser Charms, than a minor chance you'll get some in a pet battle.
Ye instead of tuning loot system properly, they created silly charms...... believe it or not, but rolling was the essence of wow, now it is silly crap, couldn't be worse. They could've tuned it easy way i mean old good system, give "Spec Prior" & "you can't get same gear twice" it prevents all rage and it is still fun. Going Sha is pathetic i went it twice and ofc no loot, i heard people doing it from very begining and still no loot, you even see nothing how u lost by how many points it is total nonsense, not to mention LFR, during cata it was way better, damn i would never expect ill say anything good about cata ....
This game is now for two kind of people
-total no lifes, who plays all day
-newcomers (ofcourse wow will be fun for them even on Mists of Dailies rules)
PS: i'm casual from 2 years i got many things up in real life, i log sometimes to do some dungeon, LFR or screw around with friends, in Mists of dailies there is no life for me, i don't have time to farm charms, do milion of dailies, hence going LFR is like pointless in this case. Unfortunately i think i will not renew my subscription, i love this game, but blizz turned it into some crap.