Embrace the space.
Improve the composition- bassist needs to listen to more Jack Bruce and less Adam Clayton.
Build the sound and arrangement from the ground up so bass drums and vocals could carry the tune alone then the guitar is always an embellishment.
Guitar player to be more aware of chordal structure and not just go off in a pentatonic widdle fest. Interact with the bass line, use double stops, and rests to give even more space to give contrasts of loud and quiet with the solo.
Rests / silence are some of the most powerful composition tools. Not every thing has to be a wall of noise.
SRV / Hendrix / Kings X etc etc all sound great with sparse arrangements.