its kind of nice having some of them be limited by the amount of stuff you have

stir rebellions
demoralise
cause dissention
bioterrorism
sabotage missiles

abd i think bomb airbases works as well as dissention does, isnt as useful in killing but can be good in wars or on suiciders or just generally to hurt someone

are all very powerful, some of the others are a bit useless though

perhaps if you want to leave them not being so powerful split up the ops into risk/reward categories

so that the ones which do more damage have a higher spy loss percentage, and perhaps a lower success rate

4 intel
6 powerful
6 im not sure on

3 of the last 6 are resources that can be hidden on market, food oil and cash can be spent, they can be ones that work better when you have a lot of the resource on hand yourself

espionage is tech stealing if i remember correctly, not sure how powerful it is but i remember it being ok, since theres no way to protect more than 25% of your tech

intelligence centres kills spies? if so perhaps it could be structured as an op for people with not so many spies to equalise the battlefield, killing a percentage of the targets spies but hurting those who kept high spals more so than lower spals like 10 spal

the buildings one could possibly get a buff, but id like to see it have higher chance of failure or losses or both and have the small ops of 2 or 3 buildings destroyed raised a bit but perhaps the large ones lowered a bit, perhaps compromise by making it do not much but kill more csites or do more but less csites