A long range abrasion blaster does not make much sense.
You still need to be close enough to minimize the limpet travel time
And honestly, in my 50+ billions gained out of mining, i never ever felt the need of a long range abrasion blaster.
At the same time, i always unlocked Lances as soon as i was thinking to get into mining (that is on 3 accounts)
A Lance (less a long range mining laser) might be better, for probing and for ships with hardpoints in the back (conda, best example)
For example, on my Conda i use 2 medium mining lasers and a lance. The other small hardpoint is used by the abrasion blaster.
A long range medium mining laser would have been even better - i know we're getting a size one laser, maybe we get to unlock long range mining lasers of size 2 too?
Anyway, at a first glance, it seems to be rigged against Torval, but maybe i'm mistaken