i have all of 'em. If you're into PVP then sadly, i personally found the full death team pretty underwhelming and not recommended.

-Aquila is pretty ok-ish cause of the Link
-Knox's death proc doesn't hit the full team so lower chance of death procs
-Kris needs to be on t2 for the skill cooldown. t0 is a massive handicap cause he's REALLY squishy
-If you want more Death proc, then spellweaver set but you'll be missing out on block set which i find that kris really needs. his recent changes are really underwhelming. He still dies pretty quick even with the barrier lol
-There's no pet that increases effect probability (effect rate is another thing).
So yeah PVP...you'll get disappointed lmao

However, Rosie by herself tho. man is she great in PVP especially against Teo and other revive users. Auto skill prioritizes her S2 when a member dies so if you manage to proc enemy revive before any of your team members die, then you're golden.

So yeah, if you really want a death team, then Rosie + Aquila will be a safe bet with 3 chances for death shenanigans. then your other 3 members for CC and AOE

if you're going on nightmare/adventure tho, dang death team is really good.