Your idea is interesting, and simpler to implement. However, I think that while your idea would in theory induce greater use of perked attacking GVs, if I understand it correctly, they will still be lost in the end. Therefore, I think that most attackers will still avoid significant perk GVs. So the net result is that the attacker will still tend to have worse GVs than the defender, as currently.
With the OP I am attempting to achieve equivalence between the choices available to both GV attacker and GV defender. So in both cases, you can pick a more effective perked vehicle, with an equal chance of landing it, on an equivalently close location. In the case of the defenders, that location is the base. In the case of the attackers, that location is the recovery space.
MH