i reckon PE should have some traditional arty. hotchkiss is kinda ok, but only 4 rockets? umm yea nice balancing.
Wehr all have nebel and stuka for defensive.which is some dam fine arty, which is in its own right american howi as comparison.
Blitz- recieve StuH and precision arty
Defensive- recieves buffs for there arty (nebel and stuka) as well as the 88
Terror- recieves the firestorm and V1 and with nebel buffs.
Americans have some sort of arty in every doctrine and be dum not to pick them.
They have the calliope, howi, bombing run and strafing run
as well as
Infantry- howi, offmaps, offmap buffs and increased uses of offmap arty

Armor- calliope (tanks destroyers dont have arty

)
Airborne- Bombing run and strafing run
British are basically the ultimate arty, even commandos have arty, and thats kinda the equivalent of luftwaffe. and every single doctrine can call in offmap by buying captian = FOO
Commandos-Offmap arty, captain FOO
royal engineers- AVRE, Captain FOO
royal canadian artillery- 25pdr, priest, creeping barrage, Arty buffs and FOO on Lt, counter battery and overwatch
Now lets look at PE..
Stuka with 4 rockets is purchasable for all doctrines except all but scorched have to pay PP for it.
Mortar HT has pathetic range compared to mortars fired from the ground... even though it says the mortar is exactly the same 81mm (or something along those lines)
mortar halftruck just dont have the range to counter ATG's all the often and i so happen to be killing more with my paradroped mortar than my dam mortar HT so vetting up for nothing.
Luftwaffe- Henshel which is shit compared to airbornes bombing run and strafing run (luft should recieve strafe aswell) and 88 becomes arty only unlockable AT T4 yet everyones gets arty without giving up so much better T4's or having it in T1 and T2 or recieve it at T0 (nebel)
Scorched earth is the only doctrine which has dedicated arty.... not like other doctrines where they all have some type of offmap arty
Scorched earth- Hummel,hummel buffs, sector arty (which im guessing is offmap arty. unless im wrong and it needs the hummel) and the opening barage at T4... T4!!! i have to sacrifice a T4 just to get arty that anyone can dodge becuase they know you have it so they avoid the centre of the map.... at the start of attacking maps.. if its not attack oh my no arty.
so without Hummel scorched earth has no more arty...
Tank destroyers- no offmap arty, no arty, non.
now this is comparing to the doctrines that have AND have not been implemented yet so im going off what could be seen from now. of course it all can change but im giving a heas up how much every other doctrine has arty superiority over PE