Panerai watches are not really limited to a certain number of pieces, unless you are talking about the special or limited edition watches. What Panerai does, is to produce a number of watches a year and labels it such. The numbering system starts with A for 1998, B 1999, C 2000, and continues from there. So like your PAM00010, it was produced for 5 years, from 1997 to 2001, so no alphabet to D. It is now discontinued and currently replaced by PAM00114.
PAM00010
Pre A - 105 pieces
A (1998) - 1,000 pieces
B (1999) - 1,500 pieces
C (2000) - 1,500 pieces
D (2001) - 1,200 pieces
This practice is called Millesimation.
As for the 'down' side of being a manual wind, I personally feel that it provides a level of interaction that can only be enjoyed by a manual wind movement. An opportunity to 'handle' your watch without being looked at by the unappreciated, as a WIS.