[Q]

IMO mines are not that bad in SE IV after all and I would prefer not too complicated mines for SE V.
They should be cheap and deadly to an unprotected ship. But at highest tech level sweeping should be a reliable method to removed them.
What I would like to see are different "sweeping resistence" for mines: I SE IV every mine counts as 1 for sweeping. For SE V you could build advanced mines that count as 2 or more for sweeping. This makes sweeping more difficult. And if you have higher unit in space limits in SE V you can drop this 100 mines per sector limit, which is not good IMO.