From my expirience, flamethrower is more than okay in terms of stats, it just lacks satisfying VFX. It just feels not powerful enough when firing, if it makes sense, though I realize that in current version it does a good job of resembling real vehicle-mounted flamethrowers in terms of VFX. In my opinion, multi-lock munition should get a bit of maneuverability upgrade, since they often miss agile targets like hover tanks or helis.And one more final thing, I know that this is work-in progress and everything is a subject to change, but current firing-related SFX sound like star wars blasters.
Really enjoying your game, love the Ghost in the Shell vibes.