a formula needs to be created so that salvage decreases the higher value you have as a planet, so at the end of the round the say top 30 value planets will gain marginally little from salvage gained from crashes but lower down, the planets where the battle is a little less 1 way, gain more from salvage to replace ship losses on own side like it is now, we help smaller value planets and also prehibit gains of a large magnitude on the big value planets.
there's always going to be crashes, people who calc wrong, people who are stuck outside and can't login, people oversleep, people do sometimes just wanna see some action, so you can't try and stop that.
But you can stop high value gains on high value planets by using a formula in relation to planet value compared with average planet value etc
You maths boys work something out. I'll prlly get ignored but it is solution