The idea is simple.
Add wildcard functionality for numeric application elements, such that we can have more flexible elements which can take wildcard numbers in for example ordinals, ancestor count etc.
Currently you have to add an explicit setup for numerical elements, limiting you when invoking the element.
If for instance you need to be able to search for just the name of the element most of the time, but once in a while would like to be able to use the same element with a specific ordinal, then you currently need to have 2 different application elements, and along with those two elements you need to duplicate the code handling these elements.
It would be much easier if we could wildcard these numeric elements and then the function-invoker could determine whether she/he would like to use the numeric element or not. If they supply a * character to the element, then it's the same as ignoring it, as it could be any value, and if they give it a specific value, then the application modeller will only match against that specific value.
Sounds like something that should be simple to implement, and at the same time make all our lives easier in the process - Cleaner code for all!