I think we should get a clear signal from the core team about specific issues of typed throws. It seems odd to me that we hold every proposal hostage (that include throws) to a future requirement/proposal that has not been accepted.
In the below post it seems to me that there may be a solution in the future that does not require us to deploy a pre-emptive support for type throws (I may be wrong?)
The proposal as-is seems fine to me +1 (even thought I am still trying to get over the fact that properties can now throw)