[quote=@Psyrencalling]
There are so many things that I could upgrade with my semblance. I could increase the amount of runes on an item, increase the time duration of my Runes of Stillness and Runes of Protection, upgrade the utility and power of the runes themselves, and a lot more. You just gave a very indecisive man a lot of choices

...Is combining existing runes to create one super rune that shares characteristics of the prior runes considered a new power?

EX: By combining the Runes of Explosion with the Runes of Freezing, you could either create a explosion that freezes everything in the blast radius or "Ice Mine" that freezes the object and the explodes when it is touched.

 I can see an argument for both the "discover new uses" path and the new power path. So I just want to get that clarified.
[/quote]

I would consider it a new use.  There are some semblances that have a lot of upgrade-able utility, like yours, and then there are those like Selective Sight that are already so specific that they can't be improved much without pretty much adding new powers.  I would recommend sensibility.

Happy to entertain.