mate, even if they say it is intended it is still a bug in my opinion :p
to out play morde even in his realm u just need to avoid his e ..... and so many champs can still 1vs1 him inside his own realm. there is no need to increase the ways to counter him.
i mean think about it this way. so many champions will beat him in any 1 vs1 situation like darius, trynda if he is not behind, nasus with a few stacks, master yi.... etc. and then there are champions that doesn't even need or meant to be in a 1 vs 1 dual and many of them if not most will have zhonya or AG as part of the kit.
and then there are so many champions that should be "losing" to morde if they are out of position or if they over extend... but most of them will just need to build qss early and then they will actually either win or at least be equal.
the way i see it once ppl get used ot the new morde this qss crap will make morde one of teh worst champs :p