Why do you need the _thisscript in here?

To be able to detect when a current waypoint is changed or deleted when using Per frame handler / unscheduled for waypoint logic (in most performant way, could probably be done by checking currentWaypoint).

params ["_group"];

[{
    params ["_thisScript"];
    if (scriptDone _thisScript) exitWith {true};
    // blah blah some logic
    // eg. setVelocityTransformation
    _someLogicCondition
}, {
    params ["", "_group"];
    _group setVariable ["my_wpDone", true];
}, [_thisScript, _group]] call CBA_fnc_waitUntilAndExecute;

waitUntil {_group getVariable ["my_wpDone", false]};

Also inconsistent, as scheduled scripts in general should have _thisScript. So you'd assume that if canSuspend, that you can access _thisScript too.
remoteExec and particle scripts and init.sqf and action scripts were also missing it.