I tend to plead for keeping the abstain option. In my opinion, it clearly - at least sometimes - may make sense to express that one has read and studied the proposal, but has not reached a conclusion whether to back or to oppose it. "Other" usually has a different meaning, namely a vote to change the original question or proposal in a direction yet to be specified.
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Daomei die Streunerin - religionsneutral, zivilisationsneutral, gildenneutral