"We would also like to remind people that the ECM is not all powerful. The rock to its scissors is the TAG laser. If you use it to hit anyone cloaked by an ECM, you and your team will be able to target them. Like any new addition to the game, this just requires a shift in thinking how to equip your Mech and/or team."
I understand the theory here, and for 8 man groups or even 4 man groups I think it is an appropriate consideration.
But for solo players (dont understand why people play solo, but they do and we have to respect their choice) TAG is not an option as a counter to ECM.
No pug in their right mind is going to take an LRM boat hoping that a scout with TAG or ECM is willing (or good enough) to make their LRM's viable. It just wont happen.
This will mean premades will take them and pugs wont. And a premade with 1-2 TAG equipped mechs and/or ECCM mechs will have a big advantage (bigger) over a group without it because LRM's are a very good support option right now.
Im not saying you cant beat a team without LRM's. Far from it. But it does give group yet another advantage because they can be tactically more flexible.
On the other hand, a team of 4 with coordinated ECM/ECCM mechs will probably not need LRMs