Reboot server is huge. It's going to drastically change how the game is played. It's like ironman in Runescape: You can't trade items to other players and you can make most of everything yourself, apart from boss kills.
The lack of trading means that in order to get new equips, you need to really abuse the Toad Hammer system introduced in the same patch. You gotta potential and enhance your lvl 110 weapon and potential all your lvl 110 armor/accessories, and then fight the next big boss (starting with PB) and obtain the next level of gear, and then pass on the enhancements and potentials and move on to the next boss. You can't transfer equips at all, not even among your own characters, so you go through this process on every single character you want to gear on this server. I think it's a cool new way to play the game. The lack of bonus potential and scrolling really speed up the gearing process, but will significantly reduce overall dps.
Bosses and mobs will be harder and more partying will be required. Mobs drop more meso, bosses drop cubes, you can buy cubes with meso. It's really nice. Also there's no incentive to pick up more equips than you need due to lack of trading.
That said, what class do I pick? I've played Aran for the most of my time, but it's clear and obvious I need a new class. I've been thinking anything with Hurricane because that skill is easy on the fingers, but there's obviously better choices out there. I've played about half the classes I'd say, but I need someone that can use the basic weapon types, such as BWs, staves, axes, etc. Over 5 years ago I've always had a dream of having a high level axe Hero, but axe Heroes were garbage back then. Is that the case today?