I'm gonna weight in a little bit here.
What I've noticed about the project at first glance, was the lack of content that it provided. It felt like a dumbed down classic server seeing how limited the skills and classes were. No buff classes, hardly any debuffs to influence PvE and PvP which results in awful class balance.
To put class balance into perspective, take a look at the Ranger and the Paladin:
Ranger: Only one 3rd class offensive skill (Lethal Shot)
Paladin: Angelic Icon, Soul of Phoenix, Shield Slam, Touch of Life and a Servitor (Dark Panther)
Also because of the lack of buffs, the gameplay is just awful, low attack speed, low damage values, slow combat and general pacing. This also goes against the general idea of a faction server, since those are usually inclined to include High Rate/PvP features like full buffs.
Another thing that bothers me is game progression. There are quests that require you to kills dozens of mobs which are 10+ levels below your own, making quests not only uninteresting, but also extremely boring. The lack of AoE play is also a huge turn off, and only encourages solo play.
I know that it's a one man project, and @IpotoniC is doing a good job, but he has some ideas that will simply never work with today's people. One of the main features that people look for in custom servers is finding ways to avoid the chore of questing and grinding the traditional way. Forcing people through a quest line is one way to get people to instantly close the client and leave.
There are many interesting features like mining, fishing and stuff, I'm not gonna get into those because they have potential to be awesome with the right tweaks.
So yeah, I always like seeing custom projects that are well thought-out, most of them are interesting, but a lot of times the DEVs are so disconnected with the playerbase that it feels like they're trying to make a general RPG in RPGMaker rather than a fully functional MMORPG experience.
I wish you luck, I will definitely try the server out once you launch later this year or whenever you decide to, but please consider moving towards faster PvP-oriented gameplay rather than a classic-feel server where no matter your level, you will always feel like a low level character.