Conversation so far:
what happened in 2009 to the veterans committee?
With the 2007 rules changes, the composite ballot was split into two separate ballots--one for managers and umpires and the other for executives.
why was it changed?
CANNOTANSWER.
what can you tell me about the 2009 election?
A separate ballot of ten executives was developed by a panel including executives, players and writers.
what else did it include?
players and writers, which was the same committee which finally voted in that area.

Question: who was a part of the changes?
Self-contained rewrite: who was a part of the  changes made by the Veterans Committee in 2009?