I've just got back into the game after a lot longer than that - 10 yrs ish probably - due to having not much to do during lockdown.
There are changes but in reality not a lot of major issues apart from the lack of players.
When Epith and Bijou closed it appears my characters were split over the new servers at random. The stockpile of lovely kit I had in guild storages ready as I levelled up all disappeared obviously
Also on Isya I've had an issue creating a new character. I deleted a L50 Cleric so I could make an Archer as my L90 Archer was put on an empty server but each time I try and create it tells me "name already in use" - even random strings of 12 or 15 letters/numbers - so good luck if you want to try and set one up there.
As it is I've started a new stable of "minis" and already got my Archer to L68 and Trickster to L44 in under 2 weeks
It's actually quite a novelty having to survive on drops and what you can make yourself. There are few if any shops to buy anything from.
You need to shout out to see if anyone has something to trade, prices are so much lower than they got to on Epith, which was frankly ridiculous, you pretty much need to make your own potions & scrolls ( a couple of people are selling stones) which is why I have 1 mini doing comp/decomp and 1 that does Scrolls & Potions.
Only down side to that - and it may just be me - but 75% of the time I try and switch characters I get disconnected so have to log in again...
Also you have to farm materials that you can't buy from NPCs and such if you want to get your scrolls/potions up from T1 which does get a bit monotonous - especially stuff like SBT