The radiation character has been thought up before, but the simple fact there aren't many radioactive areas means its pretty limited in nature. Passive, character who doesnt fight well, can't take any offensive perks (better criticals, etc), can't put any skill points into weapons, you get the idea. explosives expert who likes to blow stuff up. Same map, no more multiplayer, npc’s over the entire map totally new missions, factions and camp building. Can make up an evil side and be a Raider, can only wear raider armor, can't take defensive perks only offensive, etc. So if bethesda would announce that they will be re-releasing fallout 76 but totally focused on single player. Nature character with perks to survive outside, to spot trouble like alertness, home on the range, walker instinct, etc. Iron Chef, a character i played through one time, can only use cooking instruments as weapons (knives mostly, a few others), any food and water perks, etcīoogy man, nighttime based character, high stealth and stays out of society, perks like cannibal, other sneak eating perks, mr sandman, you get the idea. Logans loophole character, very fun to play if you combine it with certain perks and abilities that take into account the effect that Logan's loophole trait has on you. Yes not enough radiation in the game to worry about such a character, there are many more fun characters to play that have been introduced over the years.

Fallout new vegas radiation build