Revert cyno changes but lower the jump range on capitals significantly so that you can jump a maximum of lets say 1/4th or less of what the maximum range now is. Aswell as lower the cyno active cycle to 3 minutes.
This will add much more risk to jumping around with captials as you have to jump more often and possibly through hostile territory. The reduced cyno time is to make it still possible to move around at a decend pace (chaining - no fatigue) to prevent it becoming to much time consuming for freighters. And also making it cost more cyno fuel on the other end.
Tis change will also reduce the umbrella coverage and umbrella response size. Creating more balanced fights and affecting larger blocks more then small blocks. Yes you can focus your umbrella to a small area but this amount of focus will not be sustainable for ratting/mining by the current anomaly spawn rates. A small faction which has less space will be more focused by nature and would have a similar defense.
This will create much more balance, more interesting fights and responses, while effecting different block sizes proportionaly.