A generalized softfork has the same minimum requirements of a standard softfork, i.e. >50% of mining hashpower.  In practice it would wiser to shoot for something beyond the bare minimum, such as the standard 75% or 95% of hash power as with other forks.  The point is that this proposal is no different than other softforks in terms of requirements.


This proposal is an alternative to hardforks which completely replace the blockchain with a new version under different rules.  My proposal does exactly the same thing, but does so essentially as a softfork.  The new chain keeps all the the transaction history on the chain under the new rules.