Has Iranian authorities ever heard of MRAPs? You know, they exist for such stuff. Not "pimped" BTR-60 and some other weird looking vehicle.
Cost Effectiveness is one of the most priorities in Iran military decisions. If you compare military budget of Iran and Threats against Iran with other countries and considering that Iran is working on weapons in all fields such as naval weapons, air force , ground forces, you can understand this principle.
Iran don't prepare itself for confrontation against small army like Armenia, but most powerful military, political and economical country of the world in addition to its allies, so alongside quality, cost effectiveness and quantity is important too.
Maybe I was wrong But I think in confrontation with US, armored vehicles aren't top priority for Iran and don't play main role. So differences of a beautiful, comfortable light armored vehicle with a simpler and cheaper armored vehicle doesn't affect very much on the battle. But I hope Iran works better on safety of its armored vehicles specially on light vehicles.
But we know for example Iran has worked relatively well on different types of anti-armored weapons , from cheap and simple guns and rockets to more sophisticated missiles and rockets. I guess they have plans to compensate their weakness in this field with designing good tactics too.
I think Iran and specially IRGC hadn't good experience with armored vehicles in Iran-Iraq war, armored vehicles hadn't main role in their operations and tactics, Maybe one of the reason was that they haven't enough or good armored vehicles like good MBT's. I guess this experience has affected on current decisions of Iran military commanders too.