For a certain set of scenarios probably but what if the goal of an attacker is, for example, the destruction of Bitcoin? I don't think you can capture motivation for such a scenario in a model that, as far as I understand it, is based on value maximization within the Bitcoin system. The negative effect of any action within the system can always be offset by some positive effect outside the system. So I don't think it is a good idea to decide what metric should be used to judge the behavior of actors if you want to analyze attacks.