For anyone picking a mortgage term based on market-projected forward rates and today's best offers *, floating looks about as appealing as a tax audit.
The implied upside (i.e., the probability of maximizing savings with a variable) is too limited.
As students of interest rates are aware, however, market-driven rate outlooks usually have an upward bias. For example, the chart below illustrates a typical pattern we often spot at this stage of the cycle.