Yes, more or less basing the argument on the cancon. I've read the report, yeah, and i play KO quite a lot.
The riggers do serve as a countercharge heavy hitters since the grappling gun change (before the change they were the alpha strike MVP super-mobility objective grabbers), right now the Evocators can soack more hits, do bring damage and a lot of wound/points compared to riggers. From that math came my argument!
If you feel I'm wrong please tell me your exp with them cause i usually find Riggers pretty fragile and, without khemist, weak. (And i do not waste them like a beardling, i always try to squeeze the value out of them eheh)
edit... Sorry if i'm out of dispossessed topic but i think a debate around riggers could be usefull allies-talking.