As an older EX Fighter, EX Vegeta RED's saving grace is that he's farmable and Buffs two stats.
Beyond that, however, he doesn't have a lot of uses. His stats are really old and his Abilities do little to improve things.
That being said, he's still a bench stable for Red Color Counter Teams.
Color-locked Z-Abilities are not nearly the disadvantage they once were, and the fact that EX Vegeta RED Buffs Strike Attack and Defense increases his shelf life--especially in the current Meta.
On top of being an EX Fighter, all of his stats are too old for him to stand a chance in most PVP or PVE settings. None of his Moves or Abilities really stick out either, making EX Vegeta RED a bench Fighter, through and through.
Red Color Counter
As mentioned earlier, his Z-Ability is what’s keeping EX Vegeta RED relevant, especially in the current Meta. Instead of fighting in the core, he should support from the bench.