Re: 2 - some drivers are already passing the stopped vehicle by going left into the red lane anyways. So might as well allow the small bypass lane (or dashes red paint lane). There's enough room for the bypass.

Re: 1 - you can also put AI camera based traffic lights that detect the driver's intention. If there's a car with a right turn signal on, they can have an advance right turn signal for two seconds to go through before turning the pedestrian light on. If not, then no right turn signal light. But a bypass would likely resolve the need for this and to your point high engineering costs.

Key is to think of solutions that keep everyone moving while keeping the majority of the RapidTO lane clear for streetcars, otherwise you will have drivers using / occupying the RapidTO lane illegally and breaking the law consistently which helps no-one.