I'm thinking of getting one myself. Even with those annoyances, internet is so unreliable and sh1tty in some of the countries I visit regularly - or in many areas in my home country - that the value proposition is still very compelling.

It's also not a massive up-front risk at current prices (~£180 for the mini). Considering the no-minimum period policy, it's worth a shot even if it's just for redundancy that you can roam with.

Now, I wonder if adding a battery to it isn't actually a drawback when you want to travel with it, as I suppose you won't be able to put it in checked-in luggage, and it's large enough that it will take over your cabin backpack.