Fleet fire is worthless as if you are killing three people with your fire which you can only really do in super (unless you get a double kill with a nade and beat someone down) then you dont really need the help an agility and reload buff gives you. Its similar to the GS perk that gives you extra accuarcy or whatever for precision kills, its good in PVE but worthless in PVP. If simmering flames was a perk for the striker it would be amazing as you are happy to sit on your super for minutes awaiting the right moment to use it. With SB though you should crack that super ASAP and start building a new one, you should know all about this being a hunter and having a multitude of roaming supers to pick from. The other problem with simmering flames is that you either pick it or cauterise and as stated cauterise is the only decent neutral perk. You are quite simply wrong in your statements.