One problem is that often scheduling will give you an RT/PC at the end of leave. For skippers it's an easy life since you get a sector monthly. For F/Os doing relief on the Triple who can go 60 days legally between getting a landing, you can easily go a full 9 weeks with leave tagged on before rocking up for your PC.
In the past scheduling used the RT to get guys legal after leave, it is obviously cost efficient to do it this way.
To me this change doesn't as some posters on here say, keep us all in the same boat with regards to currency.