Somewhat agree. For such a ping-dependent game, making EUs play on NA servers and vice versa seems a bit odd.
Ideally, I guess, you form EU-NA alliances so that you can have players in both time zones, but apparently we'd rather fight each other (and NA additionally fights internally).
The only thing I see that the EU-NA joined server accomplished was to add more players. I assume that was the point, but since we rarely interact (due to time zones and pings), I don't think it's having the intended effect.
Basically, if you go down to EU lands, sit in the area of Tshibtin (southwest of Dhrim city, south of the big crevice) you'll see endless trains of huge EU caravans going basically NW to SE and back.
Even knowing this, who wants to run over there and fight in EU pings to stop them? So they just get free massive caravan trains endlessly running the map unopposed (whereas fighting on the NA side largely, I think, prevented anyone from having one long, free caravan area.)