Because a platform worth 220 mp 25 fuel and 100 munitions shouldn't go down to 2 Pak shots, which is easy as pie to execute.
Nah that would make it an M8 but cheaper being able to reinforce (not being able to lay mines). It's meant to be squishy. Although at the time that it comes you can definitely have a pak. The trick is too use it as a clowncar though, drive it past the Pak.
Bringing it significantly earlier (5-10 seconds or 5 fuel wouldn't be a big problem, but more would be) in the game available would make it a PE AC, and we all know how toxic that is.
Lowering it's muni cost would make it spammable. Which probably would make it too good at overrunning enemy positions.
The only way to buff it is increase damage on the main gun. And preferably more focus on it's longer range effectiveness. Also some more consistency in cooldown and burst duration would be nice.
'So my design'
* Quad damage increased from 5 to 7
* Quad reload max decreased from 12s to 10s
* Quad now has a fire aim time of 0.2s (from 0)
* Quad Fire aim time modifier at long range from 2x to 1x, at short range from 0.1x to 1x
* Quad cooldown from 4-2s to 3.2-2.4s (normalized to average 2.8s because now it's has 0.2s fire aim time)
* Quad burst duration normalized from 3.5 - 2.5 to 3.25 - 2.75
* Quad accuracy lowered from 0.2/0.4/0.4 to 0.16/0.32/0.32
* Quad accuracy increment from 1.02 to 1.03
* Quad accuracy vs Heroic armor from 0.9x to 0.85x (clean ups on target table inconsistencies)
* Quad damage vs Sdkfz halftrack from 1x to 0.75x
* Quad penetration vs Puma from 0.02x to 0.04x
This will increase dps by +12%. (It's 12% increase without the reload and accuracy increment buff, which will make it even a bit higher.)
On another note: LMG still needs small price reduction or slight buff to long range accuracy.