Re: Copying all the Rules from one Request Type to another.
Since you want to copy the rules within Request Type, I am assuming that you know that these rules would be field specific and they need to have same token on each field to work exactly same way. In case the requirement that you specified, looks to me that instead of having the rules copied, you can copy the entire request type and make changes to request type to what differs,
I would see that as better approach instead of copying 100 rules. I am not sure if you can copy a Rule from one RT to another.