With the onset of a decent complement of cloud breakers, Battering Ram deserves new consideration for Shapers with two or more . Kate and Nasir can make great use of the ram in consort with GS Shrike M2, allowing the MU of one to offset the other.
In terms of out-of-context efficiency, Battering Ram has an advantage over current darling Corroder against Eli 1.0 and Hadrian's Wall, falls short to Corroder against Wraparound, Ice Wall, and Spiderweb, and ties Corroder against barriers with odd-numbered subroutines but a strength higher than two.
Battering Ram also keeps its strength for the remainder of the run, so stacking two barriers on a server becomes a logistical nightmare for the Corp. The common strategy of double Eli becomes relatively inexpensive with the ram.
Battering Ram's interaction with Nasir deserves exceptional consideration. Because there is a paid ability window after the corp rezzes ice but before Nasir loses all of his credits, he can pump the breaker's strength before losing money and THEN gain money from the encounter.