Re-orderable Simulation/mesh/geometry trees

It really bothers me that the order of my simulations is in creation order. This seems like im being picky but I have a script that generates designs and creates velocity ramp files for me. I wanted to test the most extreme case for simulation robust-ability testing which was design_49 so no my list is:

Design_0
Design_1
Design_2
Design_49
Design_3

:cry:

Cheers,
Darren