You might look at OK.
http://www.csa.cz/en/okplus/okplus_e...ok_letspol.htm
200% business class accrual/qualifying miles
50K miles=Skyteam Elite Plus
50% SkyTeam Elite bonus
No mileage expiration with activity every 36 months

AF gives a 100% platinum bonus, but they award only a 50% bonus for paid business.