indeed, there's no substitute for good ensemble blend. Of course, when a house has MASSIVE subs under the stage to make big boom (as so often happens), the ensemble blend very often changes/suffers in 2 ways IME (as a player)--
1) The kick drum is too often treated like basically a trigger for the subs, so it sorta becomes an 808, not a bass drum. Regardless of what it feels like onstage, that will tend to subvert the inter-kit balances a sensitive drummer creates, and will consequently make on-stage balance less meaningful. Now the FOH mixer will be relied upon to re-create some semblance of blend between the rest of the kit, the rest of the band, and this big domineering boom that may not be stylistically appropriate for the music.
2) Since there is almost never any real effort toward decoupling, the energy from the subs more often than not tends to turn the whole stage into a big diaphragm resonator, creating a lot of mud onstage which interferes with band members' ability to hear both their bandmates and, in extreme cases, even themselves. It sucks to try and hear and blend with a bass player from across the stage when there are subs underneath cranking and making a massive "wooooof" that underscores everything. Often even expereinced musicians don't recognize/identify this issue--they just "can't hear the bass" and will commit the cardinal sin of asking for bass in their monitor, at which point ensemble blend goes entirely out the window for everyone onstage, in my experience at least.