I want to preface this that I am not a WOW player. Never have been and never will be.
I have been reading this https://eightyearsinazeroth.blogspot.com blog. Mainly because hearing about the guild politics is interesting.
The writer talks about their raiding. The amount of time they spend preparing. The team coordination involved to be successful. Honestly...a lot of things that have been absent from DDO for many years now. The closest thing that DDO has had to what the writer talks of was at lvl Heroic Elite Shroud before MOTU. And that was still not on par with those big WOW raids.
In WOW...when a new raid is introduced it sometimes takes weeks for even the best raiding guild conquer that raid...Forget casual raiders....they may never conquer the toughest content.
We all know DDO is a far superior game to WOW. So why can't (or won't) the devs do this. We don't need 40 man or 25 man raids like WOW...our 12 man versions are just fine. The WOW raids require multiple tanks. They would fail without them. They require dedicated healers...again...failure without them. As well as the various DPS and crowd control roles. Each Raid group in WOW is carefully planned out.
I challenge the DEVs to come up with a raid...that only the best of the best in DDO would attempt on Legendary Elite. And then...it would challenge them. This should not be a raid that can be conquered on day one. Nay Nay...it needs to take a well put together team to work through MANY sessions to finally crack it. It needs to be a raid that players would not even think of attempting with anything less than the absolute best in slot gear. It needs to be a raid that cannot be just brute forced through...it should take planning and tactics.
Don't be afraid to make it TOO hard (On Legendary Elite). Bosses should punish groups who come in un-prepared or make mistakes. And they should challenge groups who even do thing just right. We have some great players in DDO...and I doubt you could make a raid TOO hard for the best of the best in DDO. Even if it takes awhile to figure out...the DDO elite will beat any raid thrown at them.
Of course there needs to be some incentive to completing this.
There is no rule that says everyone should be able to succeed at all content.