Can I numbering the object names in outliner automatically? Instead of typing one by one.
Is there any built-in features or Python scripts I’m missing?
Is this any use?
Oh my goodness. i was looking for it. thank you.
Most welcome. 
I used the add-on for a couple of days and it was great.
But sometimes I want to use an alphabet instead of a number for ordering.
Is there a way to do this?
Not sure to be honest, I’ve never really looked into renamers as I try to name objects as I go. It’s a bit tedious, but can pay dividends later on.
You’re right.
Thank you for the feedback.