Right now I don't waste time on derelicts. In the time it takes to harvest a derelict you can harvest an asteroid or part of a planet.
Derelicts give you only scrap you don't get other resources in that time as well. In short time is better spent harvesting an asteroid vs harvesting a derelict.
I haven't bothered purchasing a derelict in play yet. In most cases the cost doesn't justify doing so. If I did and wanted to scrap it well I wouldn't be using a salvage ship I would be using a build block in advanced build mode.
Another issue that doesn't sit right with me. You attack a pirate station and destroy its faction block and suddenly it is a derelict and the only thing you can get from it is scrap.
Derelicts give you only scrap you don't get other resources in that time as well. In short time is better spent harvesting an asteroid vs harvesting a derelict.
I haven't bothered purchasing a derelict in play yet. In most cases the cost doesn't justify doing so. If I did and wanted to scrap it well I wouldn't be using a salvage ship I would be using a build block in advanced build mode.
Another issue that doesn't sit right with me. You attack a pirate station and destroy its faction block and suddenly it is a derelict and the only thing you can get from it is scrap.