Sure but why not unlock bew variations for it
Std Flux and locus variations of wide rang,
Adv normal precision(small radius big boom) ,
Proto long distant (extended travel time and distance)Normal and short range
And you can mix and match for different style ex. Long distauwide range flux or short precion locus
should not be refilable from nanohives but can fron depot

The should launch a missle that is packed with cores from the plasma cannon it should do twice as much damage as railguns but consume a high amount of energy. Then skilling into Minmatar tanks should lower the heat consumption this ount really put a hurting on railgun snipers. There should be no damage drop off due to distance and the impact should show up on the minimap.
This way you can look at the target its distance will be displayed and minimap would give you an ideal effective range.

A read a dev post somewhere that a variant of the mass driver may eventually be introduced like a mortar weapon, with a very large blast radius and maybe high damage but inaccurate. Basically a few cheap kills every 5 minutes like with a LAV. Although another dev also stated (if I remember correctly) that another new equipment item may be introduced eventually that acts like a temporary and stationary shield against weaponry to prevent orbital strike kills. (that equipment may also be intended to counter mortars and act like deployable cover in open area maps.

Also i really think the easy way to balance this weapon is having it as a vehicle with limited ammo and slow speed. I would basically say the reasoning for the slow speed would be the extra weight of the ammo and mortar tube.