What changed about the artillery?
Not entirely sure which point you are asking about.
For one we replaced the artillery canon mesh that was used instead of the MCom we had in BF3/4/1. The big one that is used in Airborne just didn't fit to well with the gameplay of 32 player Rush and it was common feedback that people can too easily hide. Those seemed like good reasons.
Then we also removed the artillery call-in when interacting with the canon. This system got introduced with BF1 and while it made a lot of sense back then and at the start of BFV, it seemed a bit out of place now since we have the reinforcement artillery call-in.
Hope that answers the question.
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