Devs need to find a way to make the server sustainable if its going to last. New content only does so much.

For me if there was a way to prevent the accumulation of items/ gp/ lv and skill it would work. Some sort of decay mechanism. With cash/ items you could have random chance to lose items every server reset such that over a year all half items would perish. Some caveat that a few items per chara can be saved and trash items like furniture doesn’t decay. Can pay a regular tax (like rent on houses) to save you from losing items, proportional to value of items. Skills and levels etc can all decay for inactive accounts.

It all sounds harsh but it would help keep things in check and have limited effect on the experience of someone who actually is playing at low- mid level.