Tiger Hunter is actually more of a PVE-oriented class with a few buffs that enhance musket in all circumstances, PVP included.
I’ll agree that some of the damage is a little underwhelming, but I think increased SFRs alone would only serve to make an already exceptionally high damage class (musket) too strong. They shine in particular when enemies are debuffed with slow/rooted, this makes sapper an excellent choice as a third class.
It has 2 bread and butter/rotation fill skills: Piercing Shot and Rapid Shot. Piercing Shot is excellent for CMs and crowds, rapid is excellent for single target. Of course, these are still going to take a backseat to your more core rotation skills from musket: Headshot -> Snipe -> Covering Fire -> Prime and Load and do it again. Think of that as a base (and what you want to be using with kraujas or weltbaum up if you’re a piper), and the tiger hunter damage skills as the filler.
Eye of the Tiger is a great way to enhance the damage of your AoE/non-damage cap skills, such as covering fire or piercing shot, especially in a very clustered environment like for CM. It’s also a way to enhance the damage of your big bursty single target skills in PVP (snipe, headshot, surprise attack).
Pursuit is the kind of thing you want up as often as it’s off CD, being able to dash in PVP situations is incredible where no other archer can do this, and you are incredibly squirrelly with leap, surprise attack, and the ability to dash that as long as you cancel Sniper’s Serenity when things go south, you should be able to get out of most bad PVP situations. Just keep in mind that if Serenity is active, you will rubber band while trying to use any of your movement skills. Rather than re-use serenity which has a second of an animation, I tend to just right click off the Serenity buff to cancel it.
Camo Shot is actually just awful. Outside using it and surprise attack to gib somebody with no gear, it’s just not well thought out. It’s far too short and it drops your movespeed too low for any kind of meaningful setup.
Either way, the class does what I want it to do. I think they could fix camo shot or remove the movespeed hit, or add additional synergy perhaps on Tiger Hunter damage under certain circumstances, but I think just increasing the SFRs is lazy.