I've spent some time playing with the new hAP ax lite and ax², and I find I want a few small changes, which will turn either one into an ideal travel router.
The simplest, cheapest option is to upgrade the USB-C port on the "lite" so that it will not only accept PD at a variety of voltage levels, it will act as a wired network interface. This will let you plug it into any USB-C laptop, with the router pulling power from it in exchange for providing it with a wired network, giving wire-speed access to whatever other devices you've plugged into the copper ports. That leaves the lone 2.4 GHz radio free to act as a client to someone else's network (coffee shop, hotel, etc) while providing a barrier between it and the rest of your devices.
If MikroTik wants to get really fancy, do it on the ax², since the molded-in feet of the "lite" are more hindrance within the confines of a TSA-approved laptop bag than they are helpful, and where the second radio might be helpful. The main argument against this idea is all those vent holes, which are liable to become crud-magnets inside a laptop bag. The "lite" isn't sealed, but there are fewer points of ingress.
My immediate use case is a trade show demo, where they give you "free" wifi — darn near poison, but in a desert, you drink up and smile — but you want not only your laptop to connect, you have a few other devices you need on the private side of the network to do the demo. As it is, I have to carry not only the hAP ax lite, but also the dedicated 5V USB-C power brick that comes with it lest I blow it up with my laptop brick, plus a USB-C to Ethernet adapter to get the laptop to connect, plus a short Ethernet cable for the laptop.
Stretch goal: put an SFP port in so I can connect it to anything that happens to be there when I arrive. Anything. Then we've got a hEX SUPER on our hands!
If you've got to drop one or two GigE ports to make that happen, that's fine. The USB-C port saved me one, and this SFP port idea lets me restore one copper port if that's what I happen to need.