The point I'm trying to make (Which has either been misunderstood or I didn't explain it properly), is not to suddenly nerf-bomb all normals. The point is in the title of the post - There is no learning curve.
For example: In MSV the first four Bosses require very little from your raid, then you get slapped with Elegon from out of nowhere with his crazy berserk timer and gear requirements (This is obviously not so much of an issue now that people can overgear the fight from LFR alone). Then you get Will of the Emperor which is a joke in comparison - That is not a very well tuned learning curve, that is: x4 Easy Bosses > x1 Huge step-up > x1 Over-easy Final Boss.
This seems even more extreme or perhaps noticeable in HoF because there is a limit to how much you can currently over-gear Garalon and yet again the first two Bosses offer little to no challenge.
The step-up is too large, the only time I feel you should experience that dramatic rise in difficulty should be for a final Boss. Example: Majordomo Staghelm > Ragnaros in Normal Firelands was a huge step up for a lot of Guilds, but he was the final boss so it was understandable. This also of course meant that even Guilds who couldn't manage Ragnaros on Normal could still gear up from all of the other Bosses before the next patch. Currently Guilds that can't overcome Garalon can only farm two Bosses in HoF and none in Terrace before 5.2 comes out.
When 5.2 comes out Guilds will not want to stay farming old content even if they aren't geared for the new content, that's just the way it is. As such a lot of Guilds will be smashing straight into Throne of Thunder with only the gear from the first couple of HoF Bosses at best.