Thanks for looking into this, and if I may I'd like to add some color:
If the technical officer is considered a pilot for the purposes of BV, it is possible to assign them 8/8 and then they get averaged into the calculation for BV for the pilot and gunner (superheavy mech bv calculation on pg 188 IO:AE).
2/4 gunner
4/2 pilot
8/8 tech officer
the average gunnery and piloting skill is then 4.66 and that rounds up to 5. So you get an effective piloting skill 2, gunnery skill 2, and because you pay for the rounded averaged skill, you are paying for 5/5. (the fact that you can game the numbers and round up also seems like an issue, but not for here).
Again, thanks for looking into this.