It appears that even though miners could pull more out of the blockchain by using multipliers, enough miners tend to be content enough to get less reward by accepting the 50 BTCV payout. This is actually good in that it strengthens the blockchain by finding blocks faster which makes a 51% attack harder. As I observe the Variable Block Rewards in action, it seems that the majority will form pools either going for x1 or x2 block rewards. There will always those trying to grab a large reward SOLO mining. It is the additional variation of pools and SOLO mining that actually makes BitcoinV a more decentralized version of Bitcoin.