For my workflow—instead of opening each plugin to tweak, EQing is easier and also faster by showing EQ parameters on MCP. It's more similar to twisting knobs on analog mixing console.
To make it even faster to set-up, the EQ plugin can be saved as FX chains, and pasted to the particular track using SWS action assigned to keyboard shortcut.
Anyway YMMV though, and your requested script might come handy on certain mixing situation.
Someone might help you with the appropriate script. Good luck