Luckily there are a lot of choices for everyone to meet the various personalities and likes. Not having one light fit all needs means you have to have more than one flashlight.
Through the years I have discovered what I like and don't. My desire for purchases has waned a lot because of not liking what I consider lights becoming too fancy.
I like the variable ring lights more than those that have a button where you click and hold to ramp. But I'm not sure I would want the majority of my lights as variable adjust. The magnetic variable ring lights tend to not be as efficient from what I've seen........but for those that like them, you can overlook that.
I agree with twistedraven where no more than 3 modes is adequate for lights in the under 500 lumen range. Definitely if there is a strobe/sos it needs to be hidden. I liked the Quark Tactical with 2 modes where you set the output from their choice of available levels.
Light needs to start out on low or at least have memory and advance upward. Don't like the recently released lights from Jetbeam that advance downward. Also don't like the lights that have a low mode that is more like medium in the 30 to 80 lumen area.
I have no single electronic switched lights aside from a couple of headlamps with fairly simple UI. I have never been a fan of single electronic switched lights or of built in chargers.
I look at the new releases but if it doesn't knock my socks off, or greatly improve what I already have, then I pass.