I was debating a lot with others about POS+POW a year ago, arguing in favour of it. I also advocating 1 minute block times and additional, Lyra2Rev2/3/3+ hashable blocks.
1min blocks+POSv2+POW+SHA+lyra2revX = good and secure coin for spending, speculation, investment, both for home miners and both professional miners, node owners, merchants..
