Since Shrapnel #9 gave us laser rifles that match (Semi-Portable) Support Laser damage with increased range, it struck me the Support Lasers need a boost. The Marik Sunraker and Steiner DWS L5L Sniper Rifle both have AP 7, so I see that as the minimum for Support Lasers. Then I increased the damage to make sure that a much heavier weapon requiring more than one person to operate does more damage, along with increasing the range. The IS Support Lasers are below for a start.
Name TL PPS AP BD TW Dmg AToW Range TW Range Wt(kg) Crew
Support Laser (Semi-Portable) D 14 7 7 0.86 110 4 40 2
Support Laser D 15 7 8 0.98 135 5 72 2
Support Laser (ER, IS) E 20 7 8 0.98 165 6 110 2
Support Laser (Heavy) D 25 7 12 1.47 165 6 250 3
Support Laser (ER Heavy, IS) E 30 7 11 1.35 195 7 300 4