Because classic league is league which is/will be played the most, therefore it's most prestigue to win season, having 'total league PO' screws that up considering it even sounds like it's more important than classic, (total PO winner>classic PO winner).
There's no total league, there shouldn't be total PO.
1 random game for each round? Great, that won't never state who is the best player (woo, you can even get hysteria game in final, in classic league, imagine that ;X)
I completely agree with rok on this one, system was good, there's no point in changing it. Oh, and yay for conservatists.