How has the solo style of CNJ really changed? You still have nukes. Nuke, cure, nuke, cure. Your means of soloing has not changed.
The only "reactive" weaponskill Gladiator had was Phalanx I/II. The only real damaging abilities they have are Riot Blade (Which shouldn't be used as a DD WS) and Circle Slash I/II. These are not definitions of the fundamentals of the job. Tanking is.
The combo systems negates your entire "no tactics" argument. And it's good that they don't have high defense capabilites, or else we get into the problem XI had where any melee job could tank and the actual tanking classes are passed over. Also, LNC is still retaining it's class fundamental of "Damage Dealer"
Maybe back in the day when mage jobs could solo anything becaue of Emulate, but since then CNJ has been a primarily healing class. The fundamental job of healing and party support has not changed.
I believe some of the spells have additional effects as well. And really? You used Absorb Attack/Accuracy/Evasion to boost your mages stats?
They are gaining even MORE control abilities when the job updates. Also, if you don't want to shoot an arrow, turn away, close your action bar, enter passive mode, or (if it's implemented as such) disable the toggle for auto-shooting. And Archer is still retaining it's fundamental role as a ranged damage dealer.
You should read up on a Monk ability from XI called "Formless Strikes". Have you considered the possibility that besides elemental weakness, there may be enemies who take more damage from magic attacks? Take less physical damage? Have a physical barrier that causes only elemental attacks to deal damage?
You can still use every single job in a solo situation and light parties. Hell, you can use all of them effectivley in a full party, raids and bosses until jobs come along.
You're arguing a point that has no validity. The fundamentals of the classes are remaining intact and the means of performing that fundamental purpose have simply been adjusted.
EDIT: Also, it was mentioned classes are for Solo AND Light Party play. Not just solo.