[Atrocities]

I think that this mine suggestion is an excellent idea overall. I would however add one feature to it. A tech that would allow for a reduced rate of decay over time. In otherwords, a technology that would replenish the mines automatically or rather maintain them for a significant time. This technology would of course be very expensive and only be available in the later stages of the game.

Also add to the random events Accidental detonation of mines, entire mine fields and the occational discovery of an acient mine fields.

How about a new system type, anicent mine field. A system littered with mines that can only be swept by very advanced stage mine sweepers.