So here's my Shabbos solution for the Ecobee 3 LITE.
Cover the (one) sensor on the thermostat.
Create a new profile to use every week-night. (I set it as an 'away' profile, so that even when I am sleeping, it wont detect that I am not there and lower the temp. If I do get up at night, it may detect that I am there and raise the heat...we'll see how that goes)
From Friday afternoon, till Saturday night, go into sleep mode (which is set to my normal temperature), and only use the thermostat temperature--no sensors. (Drawback is , that Friday night, it does not lower the heat)
With this combination, I can use 'follow me' during my home and away profiles (and my new nightly profile). On Shabbos, since its in Sleep mode, the 'Smart Home/Away' is not enabled.
Additionally, in the Sleep mode (which is what I use for Shabbos, I don't have any other sensors active, so no issue with 'Follow Me'.
And all week long, I can take advantage of the smart features.
Thoughts or feedback?