1 & 2: I wouldn't change these for Pioneer, they suit Paragon due to the Transit Drive but Pioneer has it's own way of playing.

3: This is something that I would like to see, but as you point out there are often ships crashing - that's a bug that needs fixing, also we'd need big ground and space stations like in Paragon.

4: We already have Police in Pioneer, I don't understand this one.

1) Gameplay of pioneer need a right improvement, or become full autopilot - speed 5x game, a different propulsion for cover high distance for example

3) Increase ship traffic can be good for piracy

4) i agree but first we need station then can supply it with more than 6 pads

a different thrust for cover high distance make usable large ship and make possible slower down G performance of all ships (acceleration in AU/s can be good)

If there were options to use different types of cargo as reaction mass instead of just water you could get different performance profiles... hydrogen would give a higher deltaV with less powerful thrust, carbon ore would give massive thrust but little deltaV... water would be the Baseline fuel and most efficient overall but you could set up a hydrogen feed for those 100+ AU flights (or for more fully autonomous field resupply for exploration...) and then when trouble (or a gravity well!) finds you switch to Water (or Carbon... or even Radioactives...) for high G tactical burns.

or make all to hydrogen or military fuel and hyperdrive take fuel from tanks for save cargo space, optional you can load fuel on cargo bay with "extra tank" equipment