The supression it had before made it op.
Maybe give its old setup and packup time back. Give sprint back, because it current ability doesnt do it either.
It might no supress then but its mobile and can support cons or ce,s as damage booster and it can keep up.
The thing is, it suppresses well enough if massed. Part of it too is that cons are not worth supporting/being support. Would you rather a con squad who can't scale until you fully tech and will lose helplessly against the enemy units costing the same or another MG that can support your existing MG for only 40mp more? They deal enough damage that a pair of then has far more to offer than a maxim and a con squad ever could.
Bump the maxim up to 300mp and make it do its job a little bit and drop cons to 220 and you might see the occasional con support squad but nobody wants cons as support RN because cons are not support.