Thats actually a potentially good idea,target the oil suppliers whom the west thinks can make up the difference in any iranian oil shortfall.Target the saudis and the gulfies with a campaign of sabotage against their oil transport and loading facilities ie pipelines and docks.I think this would also send a clear message,tho the problem of course is whether the chumpists and their wahabist vassals would have the brains to comprehend it and of course whether rouhani would have the required backbone to initiate it.
The main problem is that in the long run the chumpists are determined to try and destroy iran economically,and if no one else is willing to stand up to them and put their own interests first then iran is only going to be left with drastic options ie if iran cant sell its oil then no one in the me will be able to sell oil.