Brock Lesnar competed in the Men's WarGames Match this year, teaming up with The Vision. This unexpected alliance at Survivor Series only became possible due to Paul Heyman's connection with his former client. However, this alliance was only for one night. The Beast Incarnate disappeared into the shadows the night after helping Heyman's boys.A lot of fans have been hoping to see the former Universal Champion join The Vision as its full-time member. Lesnar's permanent association with Paul Heyman's boys could have elevated the faction and also made it the most terrifying faction in all of WWE. However, it looks like the Triple H-led creative team does not have any such plans.Let's take a look at three reasons why Brock Lesnar hasn't joined The Vision full-time:#3. Part-time schedule restricts himBrock Lesnar has been working on a lighter schedule in WWE, making very limited appearances in a year. This part-time schedule has emphasized quality over quantity and has helped him to have a long in-ring career. But, this very flexibility becomes a structural obstacle when considering a full-time role in a dynamic faction like The Vision.The Vision's strategy mainly relies on showing up every week on RAW and terrorizing the roster to assert dominance. But Lesnar's sporadic presence will undermine the group's cohesion and momentum, which is based on consistency. His limited appearance is one of the major reasons why The Beast Incarnate hasn't joined the faction as a full-time member.#2. Brock Lesnar has a lone-wolf personaFor years, WWE has booked Brock Lesnar as the ultimate solitary predator. He has been a mercenary who shows up, annihilates, collects his paycheck, and disappears back to the wilderness. Lesnar's aura depends on scarcity and independence. When the veteran appears, the arena feels dangerous because he is a lone wolf who answers to no one.Putting the 48-year-old on RAW every week alongside Bronn Breakker and Bronson Reed would normalize him. It could turn the unstoppable force of nature into just another big guy in the group. The Beast Incarnate would lose his mystique if he got involved in the pack, which is why he hasn't joined The Vision as an official and regular member of the faction.#1. Lesnar's utility in The Vision is limitedBrock Lesnar is one of the most decorated stars in WWE, having nothing left to prove. Meanwhile, Bron Breakker and Bronson Reed have been two of the rising stars. They have yet to carve their own legacy, win major titles, and beat legends. In WWE's big picture, Lesnar has very limited utility in The Vision. He does not need to chase gold or show up weekly to deliver matches.Therefore, The Beast Incarnate joining the faction full-time alongside two youngsters would be quite awkward. Brock Lesnar does not fit in with a group due to limited scope. So, the best possible way for WWE to utilize him is by booking him as a wildcard entry. Lesnar could work as the enforcer of The Vision, who could show up only when the faction actually needs him.