KubuxuFIL+ Allocation/DataCap can become a non-transferable token (or with highly restricted transferability, with blessing by a notary or FIL+ governing body).
Currently, we are looking at FIL+ deals becoming a two-stage process. First, the client has to use the FIL+ Allocation to bless a PieceCID with FIL+ status, and then a deal with verified status can be made.
If FIL+ Allocation were to become a token then a mechanism of Token Approvals can be used to allow approved by client markets to spend the FIL+ Allocation token for the FIL+ status, thus reducing the friction of using FIL+.
See ERC-20 standard Approve and TransferFrom
See also ERC-20 Approve issue and possible resolution: https://docs.google.com/document/d/1YLPtQxZu1UAvO9cZ1O2RPXBbT0mooh4DYKjA_jp-RLM/edit#