First off, zero point in releasing a low rate Classic server - people who want to pay monthly fees are on official servers, people who don't are on Classic.club, and those who for some reason don't want to go there are on Dex or some minor projects. No opportunity there.
 
	 
 
	But there's definitely plenty gold left undigged in the Classic mid rate/high rate area - so far all the mid/high Classic servers opened were basically no names - in other words, people who realized there's this opportunity, but they simply didn't have the advertising power of the big names to really make it.
 
	 
 
	The whole L2 private servers scene basically waits until one of the huge servers decide to make the "classic" recyclable H5 midrate with all the GM shops/ alt+b / npc buffer etc., just with Classic files. The reason is simple - Classic is vastly superior to H5 in practically every conceivable way when it comes to servers with midrate settings - whether it's balance (it was good on H5 but it's near perfect on Classic), the ways to improve (e.g. on H5, enchanting your armor just gets you some p.def which is often negligible - on Classic, getting your set to +6 and more is vital since it opens a whole new options, which alone gives a game hundreds of hours of extra endgame time), the UI, the oldschool vibe (extremelly important on a 10+ year old game) and loads of other fixes and improvements.
 
	 
 
	People are simply used to the H5 since there hasn't been a real opportunity to migrate to any 'relevant' Classic midrate. Once they do, there won't be many people coming back to the H5 since there won't be any real reason when it comes to the chronicle.
 
	 
 
	But while it's obvious that Classic midrates are the future, I'm not sure if I'd really invest time into making one unless I'd have a huge advertising budget, because people first need to learn that Classic is better than H5 from a big project, as I mentioned before. If I was serious about it, I'd probably offer a collaboration with some of the big projects; also many dead projects have their social network sites with many followers, and their owners often have their players' emails - a huge advertising opportunity there, but as always it's all about the money :)