ANd that floating point coprocessor is also a more than nice to have ... (not necessary on the same shield)That said, why not making a MATH shield, both randiom number and coproc. fit in this abstract concept.
Talking about artwork, it should contain:- the (default) pins used e.g. ethernetshield should mark pin 10-13 a bit like on - http://shieldlist.org -- a URL- a version number
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