Sorry I have upset people.
I don't think you should worry about someone being upset by perfectly reasonable questions and politely phrased replies. Adoption is an emotive subject, this sort of discussion is the very point of the board.
I think sometimes it is necessary to change names but what does make me angry is this kind of half baked idea made up by someone without any relevant experience or expertise and without having spent any time whatsoever looking into it.
I would be amazed if someone who adopted 3 kids had no experience or expertise and was approaching such important decisions in a half baked way.
Back to the question:
I'm adopted. We changed DD2's name, so I've given this quite a lot of thought from both sides.
I think the advice above about online safety and considering uniqueness is very good. I don't think a NC is necesarily a big deal. Where the child is a baby, where life story work is done and there is openness about the adoption and name it should be a minor issue. I think the suggestion to keep it as a middle name is good. I do think you should be concious of identity issues and it shouldn't be changed without good reason.
If I thought there was any reasonable risk I would change it, unless their name was very common. If you do so, don't finalise and announce that decision to SWs until after approval.
The other potential concern is around what happens if you want to adopt from that LA again. Ultimately this is completely your decision, in the best interest of your child- let no one tell you otherwise.