As much just an observation as anything, but one of the changes, or soon to be changes as it hasn't quite happened yet, Fourth Agers need to... "Learn to deal with" isn't quite right, as there is little they can actually "do" about it, so I guess "acknowledge exist" is just the level of freedom Traveling gives a channeler.
In my mind, the existence of Traveling is one of the main reasons WoT NEEDS the Dragon's Peace. To give them time to adapt to the fact that now just about everyone can get just about anywhere whenever the hell they want, and the only real control the governments have over it is... A single Dreamspike... WoT needs to do everything they can to make as many of those things as they can ASAP. If they even can.
But the thing is... The issue actually goes a whole lot deeper then that. In that while channelers in WoT don't yet know how to do it, we know that Gateways are capable of going to parallel and alternate worlds... Once they figure that out, then literally every single Traveling capable channeler is all of Gateway to a channeler-less world away from being able to set themselves up as a demigod, and... There really isn't a hell of a lot that anyone in WoT can actually do to stop them.
What stops a channeler from being able to pull a Forsaken and just up and takeover, is other channelers of similar training being there to counter such, but... For all the world said rouge channeler would of just up and vanished one day. No idea where they went. No way to track them.
And as a side issue... Raising the first batch or two of Dragon Blooded is going to be hellish...
Just think of it, five your olds perfectly capable of just up and popping over to the ogier's home dimension for no other reason then uncle Loial made an off hand comment that there weren't that many ogier... And it's not like they can just up and keep the kids shielded until they're twenty, no matter how much they might want to. lol
At least later on they can leave the babysitting to the elder siblings.
If I'm Elayne or Cadsuane or Aviendha or Logain or another leader f the channeling organizations, I'm setting out to have people running around laying inverted wards everywhere I can get them to layout the alarm for unauthorized traveling. Egwene was being smart by creating the Taveling Grounds, given the dangers of opening gateways and the risk of a rogue running around the world doing who-knows-what seems like rules such as designated entry points should be enforced pretty strongly.
There are ones that detect channeling, but those would detect anything, and IIRC have to be manually reset after having done so... Given that the area in question is "nigh all civilization on the planet" they'd have an easier time with the Dreamspikes, or even trying to coby the Guardian, or hell, just one of the channeling detection ter'angreal. But while maybe detecting it is nice and all, the Dreamspikes would actually stop it, while still allowing for authorized Traveling.
Hell, even the Dreamspikes are more limiters then out and out stoppers. Traveling is kinda Hax.
... Besides, why else would the Wheel make a point of having one of the things survive? Elayne copying it and Aviendha working out how to program the things is the best bet.
and we know that there are literally thousands of ways to spin wards, not sure it would be that hard to figure out how to set up wards in at least the major cities that would give a heads up whenever someone opened a gateway outside of the specified areas.