We have 7/7 normal before the nerfs and we're the type of guild that can not go beyond 2 or 3 heroics if they aren't nerfed. The difficulty level of heroics simply needs more good raiders. To reach 7/7 normal (before nerfs) you need at least 5-6-7 raiders that are very dedicated and good but you will need a full group of 10 incredible players to reach 7/7 heroic or at least 5-6/7.
And realistically, that's very hard.
So we enjoy a difficulty that in effect creates a new Normal mode but with different encounters.
e.g. We still found it difficult to do Lord Rhyolith but it was easily doable with the right strategy. It's like Normal, but a new normal we have to replay.
Keep doing that, it's incredible.