Here are some of my proposals. For each one, I've taken the existing design and "tweaked" it, to try and make it more modern and current - whilst keeping the original feel. That way the existing clients will still recognise it.
If you'd like to see any variations do let me know and I'll happily work some up.
Thanks for the great feedback and comments, always appreciated! Of course would be my pleasure to try something.
And here they are: #54: made the A also gold #55: made the A slightly darker gold so it looks part of the M but still and A #56: made each part a different shade of gold so it blends