To give a general recommendation here must not be useful always I think. There often are different reasons for customiced shortcuts.
For example, for many of my colleagues who have been working with Adobe CS for years, it was useful to synchronize some shortcuts with Adobe AI.
Another reason may be your native language. In German for example, circle is called K
reis, which is the reason why I use "K
" for circle
but apart from that, I left most standard commands as they are originally.
Another banal reason may be the keyboard layout - so I choose shortcuts so that they are executable with the left hand easily since my right hand is busy with the mouse mostly...
Regards and Happy Easter