I main Madness Sorc and have settled on the Gathering Storm set with the Slow Mercy and Tempest of Rho tacticals and it's been a lot of fun so far. I should probably switch them out between mobs and bosses, but I usually forget and end up just leaving the Slow Mercy one equipped. In Vet FPs, with a decent group, I don't even have to bother with a rotation. I just target the strongest enemy, hit Death Field, Force Lightning, and then Demolish hits everyone. If the mob isn't already dead by this point I just spam Force Storm to help finish them off. This set up just melts trash mobs and makes Madness feel fun and powerful again. In a lot of open world stuff with weak mobs I just hit Force Storm then Death Field, that's usually enough to take them all out.
The set bonus doesn't really do much in that lower level content, but it really shines in Master Mode FPs. For bosses and strong mobs in Master Mode FPs I usually open with Force Speed to get the proc on Polarity Shift, then hit Polarity shift and just go into my normal rotation of Creeping Terror, Affliction, Death Field, Force Leach,and Force Lightning - Demolish, Force Lightning - Lightning Strike. With the set bonus here I'm getting 20 seconds of Polarity Shift and 20% extra damage while it lasts. I can make it through almost 2 whole rotations before it wears off. This does a ton of damage up front and I have to be careful sometimes that I don't steal agro from the tank. After this I repeat my standard rotation, but hit force speed each time just before a procced Demolish. In my rotation this lines up perfectly and Force Speed is just coming off of cooldown as I'm getting the proc on Demolish. This gives Demolish a 20% damage boost every time I use it and knocks another 10 seconds off the cooldown of Polarity Shift. 10 Seconds doesn't sound like much, but in practice it usually allows me to use Polarity shift at least 2 or 3 times during a boss fight. In addition, since I can just throw in a force speed here and there while running between mobs to reduce the cooldown, it means that I can use Polarity Shift all the time and don't have to save it for the bosses.
I don't do PvP or Operations, so I can't speak about those. But, for casual play, open world, Heroics, and Vet and MM flashpoints this set up has been working out great.
In case you wanted to know my gear set-up, I'm currently at item rating 306 with the full 6 piece Gathering Storm set and a random bracer. I went the cheap route and just put MK-10 augment kits in everything and use the old 228 augments since I can make those by crafting. I have my accuracy at about 110.3% with a yellow stim, my crit is at 39.99% and I have a little over 9% alacrity. I could probably swap an alacrity augment for a crit, but under recklessness this gives me 99.99% crit which is good enough for me for now.
I main Madness Sorc and have settled on the Gathering Storm set with the Slow Mercy and Tempest of Rho tacticals and it's been a lot of fun so far. I should probably switch them out between mobs and bosses, but I usually forget and end up just leaving the Slow Mercy one equipped. In Vet FPs, with a decent group, I don't even have to bother with a rotation. I just target the strongest enemy, hit Death Field, Force Lightning, and then Demolish hits everyone. If the mob isn't already dead by this point I just spam Force Storm to help finish them off. This set up just melts trash mobs and makes Madness feel fun and powerful again. In a lot of open world stuff with weak mobs I just hit Force Storm then Death Field, that's usually enough to take them all out. The set bonus doesn't really do much in that lower level content, but it really shines in Master Mode FPs. For bosses and strong mobs in Master Mode FPs I usually open with Force Speed to get the proc on Polarity Shift, then hit Polarity shift and just go into my normal rotation of Creeping Terror, Affliction, Death Field, Force Leach,and Force Lightning - Demolish, Force Lightning - Lightning Strike. With the set bonus here I'm getting 20 seconds of Polarity Shift and 20% extra damage while it lasts. I can make it through almost 2 whole rotations before it wears off. This does a ton of damage up front and I have to be careful sometimes that I don't steal agro from the tank. After this I repeat my standard rotation, but hit force speed each time just before a procced Demolish. In my rotation this lines up perfectly and Force Speed is just coming off of cooldown as I'm getting the proc on Demolish. This gives Demolish a 20% damage boost every time I use it and knocks another 10 seconds off the cooldown of Polarity Shift. 10 Seconds doesn't sound like much, but in practice it usually allows me to use Polarity shift at least 2 or 3 times during a boss fight. In addition, since I can just throw in a force speed here and there while running between mobs to reduce the cooldown, it means that I can use Polarity Shift all the time and don't have to save it for the bosses. I don't do PvP or Operations, so I can't speak about those. But, for casual play, open world, Heroics, and Vet and MM flashpoints this set up has been working out great. In case you wanted to know my gear set-up, I'm currently at item rating 306 with the full 6 piece Gathering Storm set and a random bracer. I went the cheap route and just put MK-10 augment kits in everything and use the old 228 augments since I can make those by crafting. I have my accuracy at about 110.3% with a yellow stim, my crit is at 39.99% and I have a little over 9% alacrity. I could probably swap an alacrity augment for a crit, but under recklessness this gives me 99.99% crit which is good enough for me for now.