Could we not use the API :
http://www.coinchoose.com/api.php?base=BTCI could definitely do this, and am willing to do so. I would probably end up developing it in Python (.py), and releasing it on either Github or a website.
I am going to start this now. I do not know if I would be able to implement the inclusion of new alt coins. However, I can definitely implement the request in your first post.
This might be a good way for me to get into the community ... never know
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This should only take me a few hours to complete. So I will link to the website/github page once done.
I do have a Raspberry pi to test on, but I am going to make this program run on any computer with a python environment.
Edit: Just Confirming: Would you rather this be built in Java or Python?