Not a bad idea. Maybe there should be a 5 or 10 second timer every time anyone goes out of the ring so it can be like a wrestling match. lol. It would make the PvP more flexible with the combat if you could go could out of the boundaries briefly.
To answer the original question, Yes. I believe in the game and not just the customization. If an expansion isn't at least available for free to gold or lifetime members it would probably offend a lot of people. But for a few more zones and some end game content i'd gladly buy it.