75k annual BIS miles on Emirates using Saver fares will get you Silver but not much more. You will probably earn around 50k Skywards miles from that much flying including bonuses. That can be used for a decent redemption when accumulated over a 3 year period.
As a comparison point, I flew 117916 BIS miles on Emirates last year and finished with 51375 Tier Miles and just over 118000 Skywards Miles for my efforts, including bonuses.