Although I feel there have been many good suggestions on how to balance LD, I am going to give another one. I propose we reduce striker speed to 2/3 of its current speed while keeping the the boost meter at the same depletion rate. As it is right now, if you are playing anything other than striker, you will get mauled if you don't get the first hit in and many times even if you do. When a striker can hit me in the front and be behind me and hit again before I'm even out of my hit/stun lock it is a good indicator that they are too fast.
I feel this could be a viable way to balance LD without messing with peoples hard earned UVs/trinkets. I also feel it would require a little more planning on the strikers part before going kamakazi on the other team. This would also make weapon types other than swords more viable in LD.
If you reduce the striker speed to 2/3 of its current speed, it basically loses the full purpose. "Right now if you are playing anything other than striker, you will get mauled if you don't get the first hit in and many times even if you do" Use strategy and imagination to outsmart the striker. If I'm not mistaken, strikes usually use their ability to circle around you and strike, preventing you from attacking.
As a recon, you'll probably never be seen by the enemy unless you attack (or your cloak runs out/breaks), gunners can use this as an advantage to sneak up to the striker, wait for them to get into a place with little friends. Then keep them at bay with a gun (Polaris works the best) eventually killing them or forcing them to retreat. As a bomber you can place the bombs to keep them from getting near you, if they have a gun wait until they're occupied with something else.
As a guardian you really shouldn't be venturing off into the unknown without a few friends by your side anyways. In the event that you do encounter a striker, use your shield to either 1.Retreat slowly into familiar territory or 2.Keep on shielding, then attack when the striker is recovering
When you are playing either one of the classes..............no, thats not a good way to explain...........Have you ever tried swatting a fly? Notice how its dead hard to hit them (even with fly swatters), this is because they see everything in slow motion with their special "eyes". To hit them you have to hit where they are GOING, not where they are. This also applies for a striker, you have to hit where they're GOING, not where they are. Also, don't swing your weapon twice (especially with slow sword), that way you'll only give the striker more time to kill you
So basically, no, don't nerf the striker (even though I hate them myself)