You have pointed out some facts about the wizard that are real. However, I also can tell that you're not super knowledgeable about the wizard. Chain lightning is feasible. In a aoe perspective. It will only jump X number of enemies. These enemies are closer each other then you. It isn't a problem for you. It's dependent on the situation.
I'm with you there. Chain lightning in pvp is only available if there are no fireballs. All spells can be used in pve more so then the pvp. That is part of the charisma and power of the wizard. Knowing when to utilize a product and when not to utilize it. People love to corner hump in this game.
Chain lightning can be casted on a ranger in from a corner or throwing melee weapons. The lightning will bounce back to the people hiding in the corner. It is a massive movement with wizard. For fireballs, at least. Knowing the range of splash dmg is essential. I use it in melee and melee fights all the time. Don't be a body to the opponent. Utilize the splash damage to apply burn. This can be far more efficient. This is just a few instances of what is required to be a good skilled wizard. In terms of the initial staff. It's easy to get spell books in the event that the Alc has them for sale. I manage spell book / Qstaff for myself.
For the term "rogue. The base dmg is low for a reason. They stack poison really fast. Punches in bunches as poison builds. If you're looking to build an easy kill build, using rapier is the way to go. Lock pick certainly needs better grace time. There are many aspects to be adjusted with respect to all classes.
Don't get me wrong. I'm not saying that the game is perfect in any way. However, there are a lot of things that should be thought of out and beyond. There are many things hidden in plain sight that do not get noticed or understood by people which are actually possible. Sorry for the mistakes you made. But I want to be a part of the game! If there is something you'd like me talk to me on in greater detail. You are welcome to point it out. All of these are good debate issues that will give Devs top-quality feed back. If you want to learn more about Dark And Darker,please vist https://www.mmoexp.com/Dark-and-darker/Gold.html