Though I think the fault lies with the car manufacturers, I wish they would find an alternative for these cattle grids because they can be quite hazardous for motorcycles in the wet.
The obvious alternative is a gate. But it's been established now that motorists never have to leave their cars to open gates etc. on the public highway so I can't see that happening (although it does exist in some rare level crossings, for example). Also they probably can't be trusted to close the gate behind them.