I believe CG could possibly implement a gear requirement for Zombie’s ability to revive (possibly at G8) this promotes people to at least gear the toon up to have protection, while still maintaining the ability to revive.
A lot of these other suggestions that want to make the toon less durable as you gear it up does not align with what CG wants gearing toons up to be (their model). They want toons to be more powerful as they are geared up and want to incentivize gearing characters up.
That being said, if they truely believed in that model, they should have thought of it from the beginning when they were creating this toon. There is no easy “fix” without changing the character completely (that I can think of besides the above recommendation). I think any changes made will cause a negative reaction from the community at this point.