Pretty much the same, Shjade, for whatever you want, there is always a better choice. Not even always a newer choice. Karma may be actually able to fit in the new 3v3, since she is more useful when supporting melee rather than ranged, but I dislike the new TT too much to care. She also can't compete with other supports that lack game-changing ulties, like Taric or Alistar.
Anivia, Karthus, Katharina and Twisted Fate are as old as Heimerdinger and still radically more useful than him.
Trundle's most attractive quality for me, apart from just being tanky is the remarkable reduction of crowd control effects on him. About the same as Irelia. But both she and Olaf in his ulti are way more useful for reaching and crunching squishies.