Now I know Relic did have some m20 changes in earlier WBP versions, but along with many other changes they were scrapped (at least for that patch). I liked the changes they had hinted at, which was a reduction in manpower cost from 340 to 240. Then they gave a big nerf to baseline near and mid range accuracy, and a slight buff to long range. They added accuracy bonuses to each of the 3 levels so you can earn the accuracy back if you play it well. The vet requirements were reduced also because getting that thing up is currently very difficult, and then a +20 health was added to vet 3 like the 222.
Those changes are solid, cause as of right now, this unit can drop models insanely fast at close range even if they are retreating, which is undesirable for fair play. That said, it's far accuracy drops off heavily and it gets no accuracy bonuses with vet so its very difficult to use in most regular combat scenarios at all. The mines are phenomenal, but right now I only get the unit if I plan on placing a lot of those mines or there's an early double sniper situation. If they go with all of the above performance/vet changes, I think the cost reduction could be lessened. Maybe make it like 280-300mp and 20 fuel?