Nah! Old norse is flawed!
Latin - classic latin - is an almost perfect language. Propably if it would be still used, it would evolve into even better form, but... Too bad it's dead. Church latin sucks. Biological one, kind of too.
And NO, I don't believe in praindoeuropean language all those "wise" teachers speak about, it is impossible for all the nations to begin speaking one language... like in Bible, let's say...
In every single location people could have used various languages, then they gathered and changed them to sound familiar, it's junction not division!