Not sure what that indicates about game balance/health, though...
Certain things does indeed speak for themselves...
I got 35 different types of runes, with 20 filled runepages, totalling 150109 IP spent on the stuff (runepages included)...and yet I find myself defaulting these days to approximately 5 pages.
The gold per 10-seals were useful...back in season 4 or thereabout, but completely redundant now. And I've never even tried my revival quints (well, perhaps in a few AI games, but I didn't really notice anything).
The current usefulness of some AR/scaling AR and MR/scaling MR runes I guess (hope) still goes without saying, but honestly, the few runes I personally find the most useful (depending on preferred champions and playstyle, I guess) are MS quints (truly (truly, truly) my best investment ever), some mana regen seals/glyphs and some CDR glyphs.
Primarily for my beloved purple main, Lulu.
That still leaves some 80% of all my runes to rate more or less as "meh" in terms of their usefulness.
That said, scaling energy regen runes in the Howling Abyss - the place I consider my second home (even the weather there is what I usually see out the window) - feels kinda wurf. Or even if they're not really that useful, then just purely for their "lulz" value. Or at the very least, something to waste some more IP on.