Thus it isn't really "re-making" Cabal Online itself, but the idea & will that's there, is what counts.
And I personally think that copying other servers with just slightly more content than others,
isn't quite what keeps a community together nor active.
It is the effort you put into it and of course mostly the results.
Quality should go over quantity, so if your results are fairly decent at least,
you'd probably be able to start something that lasts at least as long as the popular servers nowadays...
That is, if you're planning to do so at the first place.
Population may not be the same, but hey, no one knows.
Good luck, can't wait to see some progress there!