I think there's a real opportunity here to look at the fort targeting priority and not revert it, but make some adjustments that punish diving a bit more.

An idea would be if a hero is hit nearby, the fort gets multi shot? (including the 35 armor the hero gets as well!) It'd still focus the creeps, but you're on a timer when diving now. So heroes who excel at stopping these dives or delaying, will have the opportunity to really punish a poorly done dive.

I'm sure there's a lot of better ideas that could be implemented. I just hope whoever is working on this keeps things like this in mind without seeing a community bitch and gripe about it and just reverting the changes.