I think flint needs a nerf, but this one is too strong, making him unplayable. I'd suggest removing the aura is enough, this way he'll be more like a support than a carry, which is not a good direction for a hero only with damage skills.
Agree with the artillery nerf, I don't think its too strong, but it is really annyoying to play against, especially when the artillery is turtling in the base. It leads to boring 50 min games.
and thanks for changing back the power supply, i hated the recent patch. It took away the early value of minor totems and the power supply itse