I think on the menu there should be:
Choose your prestige
Unlock all challenges
Vision mods
Other mods (Pro-mod and other stuff)
You could add, if not in there, dvars for being able to see people with UAV Jammer, or hear Dead Silence. Maybe a choice to leave with slow-mo or super speed, if possible.
Don't know if that is possible, but just ideas.

i think that u shold try to make it so the main contols u use are not the things u use because if i want cartoon and im switchingg my guns i dont want to swithch my visions and wen i ran the game ended i had insane stats

Make a mod menu as i think there the best but toggle prestige's is much better than instant 10th