I do not have a specific proposal, but I wish the server side code (e.g. org.eclipse.jgit.transport.UploadPack,ReceivePack) can make use of RuntimeException derived classes more. Basically the server cannot do any exception recovery when an exception happens, and the code anyway ends up with writing an ERR packet. Then, propagating checked exceptions doesn't that make sense. If there is an exception hierarchy change (and it probably means exception handling policy change), it's nice if there are RuntimeException derived exceptions for the server-side code.
(Also this is a minor thing, but the server code somehow catches java.lang.Error. I think we should not catch Error subclasses in applications in general.)
