|James MacKenzie RPG Superstar 2008 Top 16 aka Sir_Wulf|
Situations like the "Readied Archer" need to be handled conservatively, lest they provide an overwhelming advantage to the group allowed to ready actions. Most such situations are better handled as a surprise round.
Players sometimes envision situations where their "readied" actions would annihilate unsuspecting foes, but then resent the converse situation, where opponents drop half the party with their own readied actions.
In addition to potential balance/rule issues, such situations don't pass "real world" muster as well as some people think. In the real world, suspects have managed to charge and grapple police officers covering them with drawn weapons (A "readied action" if anything was). Soldiers have caught (and thrown back) hand grenades. These situations are hardly the certain deal that a readied action creates.