Also noticed Adar missed some of the upgrades on Ebb/Flow, which I can fill in!
One control upgrade that makes you commit a force die until the end of the encounter, For every check in the encounter roll a force die to all skill checks, Either pip can add success or advantage to the check, BUT dark side pips cause user to suffer 1 strain and gain 1 conflict.
Multiple strength upgrades, first that allows for strain to be healed/inflicted for 1 pip, second which can be used to increase advantage or threat for 1 pip, and third which increases failure or success for 1 pip, all which can be used multiple times.
Range upgrade for 2 pips to affect all OTHER characters at short range.
The last control upgrade is pretty cool as it really powers up the base power. For Ebb it allows you for once a session if a target has suffered five strain, cause an automatic despair on their next check. For Flow, once per session again, if you have healed 5 strain from this power in the session your next check gets an automatic triumph. Note both once per sessions seem independent by the RAW so you could use both in a single session.