Runes are more fair than you think!
I see this a lot whenever a new rune gets thrown out into the public for people to pick apart and judge. Basically, the boards, reddit, groups of friends, whatever all start freaking out and going "THIS WILL BREAK THE GAME! THIS IS GAME OVER MAN, GAME OVER!"
It's not. It really is not because there is this one little factor people seem to forget.
You only get one big rune. You only get 1 shot at a big slice of pie and you need to consider the vast array of options that are in front of you. Do you want Apple or Pumpkin? How about Cherry? Maybe some Blueberry? What about this famous Rhubarb pie!
The point is, you have to pick from a variety of options and you only get one. Each option has clear ups but people are forgetting the downs that come with those. If I pick the summoner spell swap rune, then I miss out on Ultimore. If I pick ultimore, then I am missing out on the TLD style spell. All of which offer different powers and will change how you approach a game. So before we start freaking out about how we have 50 seconds ults! (We already have a ton of those guys...?)
Remember that Karthus just gave up a lot of his early game damage potential and isn't the full potential of his damage but he will have more chances to shoot off ult.
Also on the note of Ultimore, you are using your ultimate to gain some CDR on it. Unless you already have a low CDR on it or it's a low impact style ult, then I highly doubt you will be just fire it off in lane with no purpose. Then when you walk to lane you don't have ult and I can now all in you because you are down an ultimate but I am not. Same goes for summoner swap, etc. There are many other factors to consider.
