Discussion Client Choise c4

[Enfelios]

I have a server c4 l2j sources on an authentic old client. Most players want a new client. I don't know anything about new clients.
I can figure out the packеts, but I don’t understand anything about the client.
Questions.
Which client is best for c4?
Let’s say I took 19 protocol Classic for the test. But there are no catacombs and other things there. But at the same time, if you do a TP based on the coordinates, these maps are there. I made a TP in Rune and it exists. Can I somehow open locations? Or replace maps from similar clients? Thank you in advance for your answers and help.

Edited October 3, 2023 by Enfelios