Hi Akhtar,
one of the ugly disadvantages of RD is the %-notation. Therefor our best practices is to create dedicated partitions for each RD and use the "This route domain is the Partition Default Route Domain" option. As a result you will only see the configuration per RD when switching the partitions (which is also some kind of visual separation) and the biggest advantage you don't see any %-notation and you also don't have to add the correct %-notation when creating nodes or vs.
Only thing you have to be careful is when using network DGLs and playing with iRules.
Hope that helps a little bit.
Ciao Stefan :)