For me, I had a lot of fun in Growth Server due to everyone is the same
level as I was. I can have a party of 5 in any stage of the game compare
if you play in the old server, it’s kinda lonely. But they could make it
without creating a new account, like PoE and D3. One account can move
between old and growth servers. Guild also should be accessible in both
but you need to activate it in growth for a price and if 1 of the two is
participated in GTW, both should be participated. Guild Leader can
assign a GL for the growth server. In character creation, you can only
create a character in growth server depending on how many empty
character slot you have on the old server. We should also have different
rewards and achievement on every growth server release. Goddess’
Roulette should be kept as progression meter for new players. And when
it is time to merge every items in both inventory, team and personal,
should be mail on the old server and the growth server is over. This is
just my suggestion to keep players to stay and play the game.