A couple Pokemon battle simulator communities use the usage statistics system, where pokemon that get used a certain amount get the "overused" status, which distinguishes these pokemon as the best of the best. Because other pokemon who aren't as competitively viable in the overused(OU) tier, these communities create an underused tier for these pokemon to compete with other pokemon that aren't as competitive. A similar system would be a lot of fun in the crucible, because it increases variety to the point where certain weapons that never get used have a chance to shine, and would probably lower the overall TTK and play speed in this playlist. You might be able to shoot off an extra NLB round, or get a couple headshots in with your eidolon ally, and would be both less competitive and more fun, and the thing is players get a direct hand in determining what guns are the best of the best and what guns can be UU, which should be generally fun. The biggest, most glaring problem with a playlist like that though is that the more casual audience might spend their time in UU more, and makes Thorn and TLW etc be used way way more. I think its a cool idea at least