The big counterargument to the intel structures is: structure spam.
The largest nullsec coalition in the game needed to spend a full 6 weeks running fleets 24/7—3-4 fleets out at all times, every day to kill all of the structures in 1 relatively lightly-populated region. By comparison, we estimate that it would take us about a year and a half to burn down Delve. Any smaller group… at least 2 full years to clear a single region.
Before introducing more structures, CCP needs to address the difficulties with clearing current structures. One timer. No timer at all for low power structures. No damage cap on low power structures. Nuke asset safety, and put in the ability to file a ticket via the account management website to have your possessions mothballed in escrow or something if you abruptly need to be offline because of an emergency of some sort.
And then, yeah, expand the hacking game through the entosis link. Make it active gameplay, not the lame ‘orbit button for 10-60m while people watch you’ they’ve copied from FW.