I think it should be life for life, but only i the evidence actually 100% says you killed soemone on purpose, if someone knocks someone down be accident as they ran in the road and they died then thats different but acutally shooting someone or stabbign them etc then imo life for life.
But for example in the case of derek bently over 50 years ago the evidence isnt always taken in to consideration and people could be wrongly hung so in that sence no.

