While trying out some things (with cheats), I built a T3 Static Arty next to a paragon, to see how fast it would fire. However, the Paragon does not provide an adjacency bonus, despite being both a mass and power generator.
A Salvation rapid fire artillery costs close to the amount of a paragon, as do 3 T3 artillery, and a Salvation might be the first thing you build once you finished the paragon.
Shouldn't artillery benefit from being adjacent to the paragon?
I'm definitely 80% serious on this