I'm in NA and I have zero problems lining up super punts on my kob and chosen. Might be from your side.
As for the original poster, the kob/chosen punts are fine as they are for the following:
1.The ranged punts don't shut down people except when there are vertical obstacles such as in Tor anroc, gates and nordland around the bridge. That's a flow with the design as any class with a super KB: IB,BG,SH can do the same.
Having said that, you can avoid being punted away from the action in gates and nordenwatch if you position your self in the right spot and away from edges. I know certain healers by name that I can never punt away. Also, resolute defense is a must for people if you see someone coming in for a punt. If they'd rather spec into critical dmg/healing or block%, well..poor planing on their part does not constitute an emergency on everyone else's.
2.Ranged punts at the 10s cooldown in kobs and chosen are a must for the class as otherwise they become even more boring to play as then their role is reduced to guard swapping since the auras require no effort. They bring no good dps or effective single target debuffs except for the extra interrupt for the kob -gotta leave your guarded target to go interrupt a healer in the backline so kinda useless-.
3.Kobs/chosen sacrifice a valuable tactic slot for the said punt. Regular punt is obviously utterly useless and no semi-decent tank runs without the tactic. It's a hindrance using the normal punt because if you're useless in punting, at least don't give the target the immunity and let someone else do your job for you.
4.IB Can bring many things that a kob can't. They can solo well, good self heal, good self and single buddy buffs, AOE snare with no immunity and no need for a tactic for it, great range on the kb without any sacrifices in the tactic slot. You can't have everything in the IB..come on.. I think they're in a good spot and people seem to enjoy them. Not so the case with the BG but nerfing other tanks is not the way to fix BGs.
5.BO have many group utilities and again the chosen doesn't have access to them. I'm not familiar with SMs but Az knows the class inside-out. If he thinks they need super single target punts he doesn't need input from us.
5.Very few PUG kobs/chosen use punt and even less use it effectively . We base the balance on good players but still, that should be considered.
6.The super punt is essential on the current cooldown where it matters..premades vs premades. It can be very easy to miss your punt given the need to position your self behind the enemy guard AND make sure the immunity isn't up AND also resolute defense isn't up. Even then, the other guard will easily swap and the healers can burst their morales through that narrow window if the guard calls being knockedback on voice.
Making the CD 20s with all these factors working against the punt is just silly and will make fights frustrating for the premades and will not effect the pug matches coz A:pug tanks rarely punt as mentioned B:Not the fault of the tank the target stands near edges and C:not the fault of the tank 99% of people don't get resolute defense. D:SMs and BO run around giving everyone immunity to punts in pugs.
I knock back targets just as effectively on my IB and SH for the above reasons.
Summary:
1.Get resolute defense -sorry but it's a must if you're queing for certain scenarios or guarding people- and I'm not directing this at the OP.
2.Tank classes can't have everything and super punts as they are are one of the few active tools kobs/chosen have.
3.I rarely que for tor anroc because the scenario is stupid and one kb from any of the numerous classes can essentially one shot you. It's the poor design of the scenario -or the fun aspect of it if you like that- and besides..tor anroc is one of the scenarios that notoriously ends up in spawn camping and wasting everyone's time. Waste of time scenario. If someone is still willing to que for this and not the numerous other scenarios, that's no reason to nerf classes.
4.Finding good tanks good at guard swapping and punts is like finding a sexy single straight guy over 30. They are rare to find coz they are either A: Married -in premades- or B:Gay -plays his/her dps/healing toons-. Given that, please don't make the already boring kobs and chosen even more boring by nerfing the punt.