I'd like to point out that they DID give the 6S the most mech/weapon module slots of the chassis:
ZEU-6S®: 3 Mech modules, 3 Weapon modules, 1 Mech/Weapon module.
ZEU-9S: 1 Mech module, 3 Weapon modules, 1 Mech/Weapon module.
ZEU-6T: 2 Mech modules, 2 Weapon modules, 1 Mech/Weapon module.
ZEU-5S: 2 Mech modules, 1 Weapon module, 1 Mech/Weapon module.
I haven't had a chance to test the mech out on PTS, as there was nobody playing when I got home (searching for match for 15 min....), but just off this I'm not so sure that the increase in weapon modules is enough to offset the large loss of structure that the other variants gained.
Another thing to note, I looked around at a lot of my other mechs and I didn't find any with ARMOR buffs... just structure. Only structure. Atlas-D has +50 STRUCTURE in CT, not armor... so it looks like they've gotten rid of armor buffs entirely in favor of structure. My ONLY theory on why is so as to make weapons like the LBX and MG useful in critting out components.
TL;DR:
They seem to be trying to offset the weaker quirks on a chassis with more module slots. The 6S, with the weakest quirks, gets the most modules. I'm not entirely certain this is going to be enough. Though on the 6S you could take Seismic Sensor, Radar Derp, + module of your choice (target retention or advanced zoom or whatever) PLUS 4 weapon modules... cooldown AND range for your primary weapons, essentially. Again, undecided if this is going to be enough, but it is something to consider.
Edited by Weaselball, 12 September 2015 - 10:32 AM.