BU is for blocking segwit.
Without segwit Bitcoin will slowly loosing dev warfare over alts like ETH and many people will move to ETH till its implode...
I was originally thinking ETH, but there is a new Sheriff in town as of 48 hours ago.
Bitcoin will not move higher in price, until Litecoin catches up.
ETH will also compete with Raiden, but LTC is where the big time action is.