PVE perspective.
The weapon feels great for condi holosmith, but it does have some pain points.
It's hard to tell if a target has focus in large groups, and I'm not even sure if it's working on bosses.
Skill 2 feels very meh, it works to apply focus but skill 5 is a far better movement skill.
Skill 4 is too slow and feels clucky to use. Moving it to a 3/4 cast time would be better.
Skill 5 is fine, though I don't really understand why you need two movement skills.
About skill 3:
It seems to me that holosmith rotations will revolve heavily around this skill. The idea is that you cast the skill, goes into forge mode for a 5s rotation than back out to cast Electric Artillery. The issues are that you can't build heat fast enough this way. I got around the issue by swapping from Solar Focusing Lens to Light Density Amplifier, but increasing the time that Electric Artillery is active from 7s to 10s could help.
Electric Artillery is also a bit slow to cast, though I'm not sure if that's do to the cast time or the animation, but it can feel clucky.