Game needs Medium-Difficulty Support
This game ranges from pretty-utterly easy (All Dungeons, Steamroll Tower) to incredibly difficult (Savage Coil).
Every once in a while, we get a decent mid-grade difficulty option (Pre-Nerf Pharos, Primal Extremes, Obsoleted Echo-Coil)... but there's very little support for it in general... notice the terms "pre-nerf" or "obsoleted".
Using Duty Finder as a reference:
I think Easy Difficulty should be fairly PUG-able.
I think Medium Difficulty should be pretty difficult to PUG.
I think Hard Difficulty should be next-to-impossible to PUG.
How to Implement Medium Difficulty:
"Extreme" Dungeons, both mechanically/statistically tougher (no need bosses/layouts to spare development time).
"Savage" 24-Mans, generally for pre-made Alliances/FC fun.
"Raid Lite" 8-Man alternative, less dependent on statics; a good, achievable progression-point, for the less hardcore or skilled.
^will require the expansion, I've read there will be multiple 8-man raid options... but we'll see. Not saying "easy Coil", I'm saying a different raid altogether. I think it's okay to have top-tier difficulty raids that remain top-tier so long as imperative plot details aren't gated behind it (*cough* Coil *cough*).
Primal's seem fine as-is though they don't qualify as raid-alternatives (neither should they) since they have so little personal replay value once you earn the piece you want.
Obsoleting a raid-tier to medium difficulty doesn't really count either as it's not really 'supporting medium difficulty' content but rather assisting "catch up". Implementing medium difficulty content in-line with easy & hard content is more appropriate & a must for this game imho.