I have started playing there to utilize bonuses for faster creation of "foothold" but one developer decision rendered my long term plans obsolete so all my characters there are hibernating and w8ing for server merge (which is inevitable imho)- it has also proven once more than having more than one character in game is an error (unless You don't have much on primary character and want to switch sides).
Right now I do not see even one reason to play on new server unless we have boutique items (like extra scrolls) tied to entire account not just one character. My personal experience with game suggests near zero probability of that happening
Edit: I've forgotten Collector Editions are tied to every char on account but not all of them were worth buying (why do I need another mount if I have one from previous edition already? why not add option to choose items from the list?)