Well, reaching iSRO standards is... Barely... No honestly, that is impossible. It is not just about skills and items, everyone can copy... Or even create them before joymax moves their asses to do so (adding the first part of arabia is the first evidence of being total marketing failing idiots), but the main fact which will raise the interest of players is owning the current up to date tools and compatible client. Which means, new guide system, original quest scripts, the true triggers for Devil's garden and Petra's dungeon (triggering the doors and the 3 bridges, if you know how to make it work with codecaving or even simpler with SPs, skip this), the new fully working pet system, weapon exchange system, skill and coin system (last one, not really that uber cool imo), etc.
Using regular vsro 188/193, twsro, jsro, csro, etc files won't help you that much.
It would be a good revive if you were able to send a backdoor to joymax's servers/root and sniff everything. A pserver which did this is known as the first and only real Silkroad R copy. Well, they ain't that successful. Bunch of retards and morons "developing" there. No clue about what they do, cannot fix some simple bugs which they made by themselves and if you wanted to be a part of that server, they want your real ID. Seriously? Handing out my personal ID card with any information on it for a none paid position as a [Helper] on a miserable illegal pserver?
Don't ever do this kind of bullshit, and you are unique within 1 point at least ;)