I don't know what happened to my last thread on this but it disappeared and I didn't get a message from a mod or nothin' so here it is again. I'll try to use paragraphs this time since nobody liked my easy-read sentences. Usually I dislike reading walls of text but here goes:
I believe the Blade Barrier spell should be improved. Arcanes get Wall of Fire which they can stand in because well.. it's a strip of fire. Monsters do not need to move in and out of the WoF, and you can sit and block in one until a mob dies. It's known that with Blade Barrier, you need to kite monsters in-and-out of the circular strip of blades. If a monster is in the middle with you, he's not hurt. I don't think this should be the case because it doesn't make much sense.
If I were to stick my finger in a fan, the blade would hit my finger and keep doing so until I either moved my finger or it turned off. I don't have to pull my finger back-and-forth teasing the blades just to get the fan to hit my finger. Also, I do not find Blade Barrier to be OP. It does make sense (unlike my last suggestion for this) to keep Blade Barriers from being able to stack. If I had 2 fans and pushed the blades together, they would both stop.
Blade Barriers are not OP just because it's slashing damage. It still costs SP and more-so with Metamagics. There are other spells which could be considered OP if Blade Barrier is. Take Necrotic Bolt and Necrotic Blast for instance, though not technically "spells" since they're from the enhancement line and use HP. They could be considered OP because of the fact they use HP and a Death Aura will regen that easily. I've also seen Necrotic Bolt crit for over 1k.
Anyway, I'm not saying Necrotic Bolt is OP. I was just giving a comparison to Blade Barrier and it's functionality. Oh, and for a follow-up on the Blade Barriers not working when overlaying.. why not simply negate one? This could be done by caster level and/or time left. So if you're solo and you lay down 2 Blade Barriers, the second one would override the first. If you're with a lowbie and he uses Blade Barrier and then you cast your higher level one, it overrides his.
Thank you for reading and I hope you consider my changes for Blade Barrier.