While this is not so bad for PI and CI-Senate (given there are only ≤50 regions), selecting where to run ads is a huge pain for PMI-UK, PMI-Canada and CI-House - given there are respectively 650, 338 and 435 seats to select between! While this mostly focuses on ads, some of this can be generalized to other constituency actions e.g. selecting which seats to target, or put footsoldiers in.
Firstly, add the ability to 'Copy Ad Selection' from another ad you are already running. E.g. if I am already running a CON-Leadership in 300 selected constituencies, and I want to run a CON-Integrity ad