I realise it isn't a historical simulation however the reason detre behind the British adoption of an 88mm rather than the 105s preferred by most other western Forces might give a hint as to the direction this could go.
Larger numbers of lower calibre artillery was preferred for their ability to suppress enemy troops, also for volume massed fire against armoured formations. Indeed artillery was the prime cause of tank kills, both from indirect fire and the 25pdrs added role of anti-tank gun with a supercharged red powder bag ( direct fire, nowt to do with the COH range increase).
Also British doctrine put a heavy emphasis on smoke when assaulting an enemy position. Creeping barrages ( for which the 25pdr was considered a bit heavy) of HE then smoke so the infantry could get close in and personal.
Very information heavy site for arms geeks here...
http://nigelef.tripod.com/RAorg.htm
Both NGFS and inland fires called for timely weight of accurate fire. Now clearly the current ability is neither timely, weighty nor accurate. I don't claim to be a good player, although I do have a 100% win rate ( at least until I play my second game), so am just looking to give some historical foundation on which those who know the game mechanics more intimately could comment...