I can see scenarios where dumping the Arty will work even after balance, but aren't we really arguing something that they said would be fixed?
It's obvious from the WWWs that the devs know there are some issues being worked on, and that both sides have exploited those issues - everything from the underpowered artillery to being able to invade through enemy controlled straits. If they do another WWW, or even later in this one as the development build keeps on changing (totally messing up the gearing bonuses practically every week, lol) I'm sure that some of these issues are going to be addressed and the combatants won't be able to do the things they currently do. Da9iel might be looking for that arty that he sent off if they change the artillery before the WWW comes to an end. If he doesn't, then Johan's invasions will suddenly have an awful lot more traction if they have inf with arty included.
That being said - Remember when Da9iel attacked the Soviets, he was trying to get through a winter at the start, against an army decimated by the Trotskyites, further decimated by the gearing issues with the restarts of the engine, etc. If he could save supplies and keep his army moving through the winter and then take advantage by re-adding the artillery, etc. in better weather if needed, I might be tempted if I knew that the Russian Bear was more of a Russian Teddy. The Russians folded rather quickly under those circumstances - I'm not so sure that he would have done just as he did had the Russians been more to strength and org.
But again, they're playing on an incomplete version of the game that is constantly being updated, and both sides apparently know what the weak spots are and are exploiting them to their full extent. At least it's good to know that they know that these are weaknesses in the game, and these weaknesses are being worked on.