Yep, I was one of the rare people who hated the 1 game playoff concept but I prefer that over the best of 3.
If they insist on keeping 6 teams, how about they steal a concept from those old multi team tiebreakers that never actually happened:
Division winners advance to LDS. The Wild Card team is determined by a 2 game tournament. Using this years 3 NL wild cards, it would look like this:
Day 1: Diamondbacks (WC3) at Marlins (WC2)
Day 2: Phillies (WC1) at winner of day 1.
if that causes logistical problems just make WC1 the home team in game 2. You play the games Monday and Tuesday, LDS starts Thursday.