They need to forget about lobby balancing and focus on fixing the sandbox interaction between players. Destiny's PvP feels less like a PvP so much as it does a gimmicky cheese arena filled with OHK guns ran full time, janky movement encouraged (both defensively and offensively) by the overly-generous hit registration of pretty much all weapons, TTK power creep of primaries to help them keep up with special weapons and aforementioned movement, third party software abuse running basically unchecked, etc. Crucible's problems with matchmaking seems trivial in comparison to these things. Player combat in general needs an overhaul.