I agree in regards to the lack of learning curve. In 2.0, there were a few dungeons that posed some problems. Now, with overgearing, even thats gone. Had Sastasha for leveling roulette last week, had a brand new tank, first dungeon run. ME and the other dps were helping him out. Healer didn't want to wait and ran ahead pulling things. Since you don't really need a tank in that dungeon, the tank learned very little.

While I'd like to see some content that ramps up the challenge towards savage, would it work? The community is all about rush rush rush. Harder content means things will take longer and some groups might wipe. Seeing as the community is intolerant of such things, people would leave. People instant leave aurum vale. They left Pharo Sirius before that got nerfed.

One thing I'd like to see is a rework of normal mode raids. For this raid tier we had:
omega normal - 320 gear
tomes - 330 gear
savage - 340 gear.

If they want to keep 4 man dungeons as easy as they are now, then swap the tome and normal raids so tomes give 320 gear, then kick up difficulty on normal mode raids a notch and have it drop 330 gear.