Well, my trapper had gear like this:
Helm: 1.07 Cham'd Shako
Ammy: 3trap/10fcr amulet (still want prismatic one from 1.07 *_*)
Wpn1: 45IAS 5LS 5DS GT
Wpn2: 6LS/2os GT (relevant mods 32 LR)
Armor: Enigma
Gloves: Magefist (+1 to fire skills makes them better then TO)
Belt: Arach
Rings: 2 x Beta BKWB
Boots: WT
Switch: beta CtA + Lidless (ptopaz)
7 x trap GCs + gheeds
9 x MF/mana SCs (some might even be LR/MF)
Tome of ID and Cube
Merc was HF using Infinity, Fort and Andy's Visage. Tried with beta Delirium but due to way traps work it didn't give anything more then semi-fragile merc. 65 fcr on switch, fade setup, CBF, fastest trap laying speed and great dmg.
My LR was barely positive with fade on, but I had ~5000 life so I could hardly die to anything with ~50% clawblock (one point).
Don't forget that after you cast 5 LS, you can still throw around shock webs as they don't count toward trap limit, but they last only short time so take advantage of those between waves. Fireblast is gg supplement dmg, especially for second and third wave. I use CoS only on wave 3 (you can completely prevent them from spawning hydras with perfect timing but I think it needs to be casted on frame so it's very difficult to me at least). On wave 1 and 2 there isn't huge benefit from CoS and guys just scatter and on 4 I think they are more dangerous with their physical attack. Mindblast only on lister and co but constantly so they are stunned and remain stunned.
I don't know about Baal, I would still go with infinity due to sick dmg boost. I tried to make merc so he could slow Baal (Blackthorn's face and...dunno...double upped Grayform with cold dmg jool? Something like that. But still, I don't know how much slow you need to prevent Baal from teleporting. There might be something here but I haven't found it yet.
If you can't have fastest trap speed I would probably go with fade until I kill everything in throne room, then switch to BoS for waves. If you keep distance their elemental dmg isn't scary.
I have some trap positioning ideas but not sure if you need them. I haven't done too extensive testing on that.
Helm: 1.07 Cham'd Shako
Ammy: 3trap/10fcr amulet (still want prismatic one from 1.07 *_*)
Wpn1: 45IAS 5LS 5DS GT
Wpn2: 6LS/2os GT (relevant mods 32 LR)
Armor: Enigma
Gloves: Magefist (+1 to fire skills makes them better then TO)
Belt: Arach
Rings: 2 x Beta BKWB
Boots: WT
Switch: beta CtA + Lidless (ptopaz)
7 x trap GCs + gheeds
9 x MF/mana SCs (some might even be LR/MF)
Tome of ID and Cube
Merc was HF using Infinity, Fort and Andy's Visage. Tried with beta Delirium but due to way traps work it didn't give anything more then semi-fragile merc. 65 fcr on switch, fade setup, CBF, fastest trap laying speed and great dmg.
My LR was barely positive with fade on, but I had ~5000 life so I could hardly die to anything with ~50% clawblock (one point).
Don't forget that after you cast 5 LS, you can still throw around shock webs as they don't count toward trap limit, but they last only short time so take advantage of those between waves. Fireblast is gg supplement dmg, especially for second and third wave. I use CoS only on wave 3 (you can completely prevent them from spawning hydras with perfect timing but I think it needs to be casted on frame so it's very difficult to me at least). On wave 1 and 2 there isn't huge benefit from CoS and guys just scatter and on 4 I think they are more dangerous with their physical attack. Mindblast only on lister and co but constantly so they are stunned and remain stunned.
I don't know about Baal, I would still go with infinity due to sick dmg boost. I tried to make merc so he could slow Baal (Blackthorn's face and...dunno...double upped Grayform with cold dmg jool? Something like that. But still, I don't know how much slow you need to prevent Baal from teleporting. There might be something here but I haven't found it yet.
If you can't have fastest trap speed I would probably go with fade until I kill everything in throne room, then switch to BoS for waves. If you keep distance their elemental dmg isn't scary.
I have some trap positioning ideas but not sure if you need them. I haven't done too extensive testing on that.