The whole attempt-model is just dumb, especially with a not tested encounter like Ra-Den. I remember For the Horde facing Sinestra for the first time (as the first guild) and wasted many attempts, just to see, who bugged (since not tested) this encounter was. If you have only 30 attempts, would you like to see, that you first need to waste 10 or 15 just to work out what the boss do and then to see, it will be altered on the fly, because of the bugs, noone knew about? Sounds funny.
The only thing, this will do, is to make the world-first-race closer, as guilds not WILLING to invest as much as the current top-guilds can catch up and will only be a few attempts behind. And although I'm a member of one of those guild and I'm really not WILLING(!) to invest so much time (and also just can't), I think, more investment should yield more profit. But so the cutting-edge guilds invest much more time than anyone else for the first bosses, and are than stopped by a artificial barrier called "limited attempts", so players like me, who invested so much less time and effort, have a much more realistic chance to kill this boss first (okay, not me personally, but top 10-20 guilds).