Inertiaful tracking projectiles - current behavior is that tracking projectiles always move exactly in their direction of facing. Would love the option to have tracking projectiles deal with inertia.

Limited drive time on tracking/accelerating projectiles - All projectiles that can change their speed/direction currently have that capability for their full lifetime. I'd like to be able to set the projectile's propulsion timer separately from its lifetime - for instance, a stiletto variant that continues on a ballistic course for two seconds after its drive expires.

Accelerating smart projectile pathfinding - for accelerating tracking and/or omni/swivel projectiles, would like the ability to have them calculate an intercept course based on their acceleration curve. So instead of accelerating towards the target's current position, or accelerating towards where they'd intercept the target on its current velvector, accelerating in the direction that will lead to an intercept with the target's current velvector factoring in their continued acceleration. Having that available more generally (for AI pathfinding, for example) would also be amazing.