Smoke: does it have to be opaque?

[Imp]

Smoke, especially from smoke dischargers, makes defense almost impossible. Especially with the Z key.

Smoke wont change there is a reason its used & that technology was developed to see through it, you are witnessing how powerful smoke can be especially on the attack.

Sounds like your more gripping about excessive z fire use though in this case having extra shots wont help though your hit chance will be higher.

Have some house rules for z fire or have a staggered defence if terrain allows remembering you can use smoke to.
High amounts of Z fire gives away positions & slows movement, call in your arty.