Medic and and engineer are straight up gimping themselves by not using unlocks.
Weapons like tomislav or iron bomber are almost identical to slock, but slightly more versatile.
Soldier's gunboats and banners are to good to ignore. Demo shields are interesting too and so are some spy revolvers.
Scout's secondaries were so incredible that they ALL had to be nerfed recently.
Sniper's secondaries are still generally more useful than SMG.
Conclusion: stock putrists are dum.