1) Higher collision damage (in theory that could solve ramming problem and make the asteroid fields dangerous not only IRP). On a side note, gas pockets and vanilla mine fields (apart from Z-21) could be buffed too to make those regions dangerous again.
2) Mining in Pennsylvania for DSE and gas mining for GMG; some scrap metal mining for junkers in Gallia (no idea if it will exist or not). Again, on a side note, speaking about Gallia - nerf those NPCs, or at least their numbers, or remove bomber patrols there (or add them everywhere). I can even live with battleships at jump gates, but the weapon platforms/NPCs everywhere are annoying (don't know, maybe it'll actually be fixed, since the Council is getting a system outside of Gallia; right now the systems are almost as dangerous as guard systems; I may be exaggerating a bit, but it's close to truth).
3) Hard to choose between "No CDs on non-guard NPC vessels" or "Make the trade lanes/jump gates ban hostiles from using them or make them shoot nobody".