Using service builder regulary, on small changes, may not be so efficient, because:

• it takes too much time to build all portal services when developer needs to do only a small change (e.g. add one/few new methods),

• there is that regular expression problem that breaks service building process in the middle, not reaching the rest of the entities.

The idea is to add an optional argument for service builder: target entity. now developer can pass single entity name; like 'User' and only user files are (re)generated (plus few common files).

Benefits:

1. much faster - for example, rebuilding just user service takes 40 secs for me.

2. much, much less changed files - as said above, only user related files are changed.