I agree with most of your post except this part. RDM has a COLUMN AOE SILENCE/BIND not just a root or silence, meaning even in the 1v2 environment they can manage the battlefield. Not only can they shut you down but they can literally burst you apply dot and then keep themselves sustained with white shift if need be. Their burst is absolutely insane when using displacement and corps a corps correctly and they can stack shields on themselves.
Even if we ignore white shift for self sustain, Frazzle will increase the damage the opponent(s) take by 10% for 10s. Resolution can do 8k in a line with bind/silence. Corps does another 10% damage taken debuff to enemy AND lowers the RDM damage taken from the enemy for 7s. So Frazzle > Corps > Melee combo, displacement which then buffs your magic damage by 20%, at any point before or after this you can bind your target to leave them sitting in one place, even if they use a gap closer on you because your next cast after your melee combo is instant cast so you can bind and move out of range. All without using a single cast time skill.
Your counters are:
1. Guard and hope they're stupid enough to keep using their combo on you (instead of just waiting to unload on you again since both corps and displacement have 2 charges)
2. Attempt to outdps/stun the RDM (in which they have a single purify leading them right back to unloading on you)
I don't know if I'm just missing something or misreading here but they can absolutely delete someone in a 1v2 environment, guard and start it up again immediately after 10s or so after they last combo'd you, and/or swap to white shift after DoT'ing the first target and just outlasting them. That's not to say they're unstoppable in 1v2 but the fact that we even have to bring up 1v2 to talk about RDM balance is kinda hilarious in retrospect. I can't think of a job off the top of my head who CAN safely 1v2 without factoring in LB.
But yes GNB is absolutely the worst class right now I think. BLM and DNC are really its only competition but even DNC and BLM have made me have to actually change my strats. I want to play as GNB and I've tried but I basically just burst them down and move on with my life every time I see one because they're so little of an issue in anything but a perfect scenario lol.
