Seems the main boost you get from going up to 50 (or as close as you can) is the reservoir of force points and life energy is greater, meaning you can last longer. But I agree that most of the best/useful powers can be obtained well before you reach that level.
Now, I want you to remember that no bastard ever won a war by dying for his country. He won it by making the other poor, dumb bastard die for his country.---Patton
There is no room in this country for hyphenated Americanism.---Teddy Roosevelt
I never forget a face, but in your case I'll make an exception.---Groucho
And if you all get killed, I'll piss on your graves.---Shaman Urdnot
How would you like to own a little bit of my foot in your ass.---Red Foreman