Turbo timer: I think no timer is more risk, so should not be default, but selectable.
Number of modes: for me, I like moonlight mode also. Everyday tasks like helping to put my key in the lock, this is much better.
Type of strobe: I think that if it is bright enough, even a slower rate can be disorienting. (still strobe rate, not beacon)
SOS / beacon: I would be happy if I never saw the SOS feature again. I think the odds of ever needing this is extremely small. If this was for a dedicated survival type light then this might be more important but there would be a lot of other features that would be equally important. Also, if I’m ever in a survival scenario, I wouldn’t want to sacrifice my battery for a beacon. I would much rather have a very small waterproof dedicated beacon.