Suma had good reports on his time as South's senior coach. Whilst he is a "Freo boy" he is forever connected to that other mob. And so, there is already a portion of Freo people who are negative towards him. If things don't go well soon enough there is a pack already formed and ready to take him down. This would get ugly.
With Longmuir it would allow a longer period of patience and tolerance, simply for the fact Justin is "one of us"...perceived or not, the footy world can be fickle and moody.
For the sake of a longer honeymoon period, the youth and potential, the apparent innovation...I reckon JLo is the man. Sumich definitely in as an assistant and player development, recruitment.