The range thing on abilities was just bad luck. There are no mechanics like that in the game.
As for the traveler, there will be some relevant changes in the v0.2.5 update.
I think I'll leave the necro for now (it might get changed later on), mostly because summoning zombies is unique in the game and only available to the necromancer, I don't want to push it into level 2, because then everyone can be a necro. :) I'm okay with some professions having a more difficult playthrough and some more comfortable, some players might pick a race + profession combination just for the challenge. I'll play around with him a bit more to see if some tweaking is required, maybe beef up zombies, or perhaps they are fine as they need a different playstyle than other characters. Also on level 2, I think necro gets acid spit, which is a stronger version of firebolt.
I'm happy you enjoy the game, and I'm looking forward to more of your feedback and ideas. :)