Same here. As somebody eloquently described the side switch on the Fenix lights:
I'm really hoping that Fenix will get away from this whole side switch mess. Ugh. It's a solution looking for a problem.
In fairness, they'll never make everybody happy with the UI but could easily come up with a more customizable UI that suits most needs. All they'd really need to do is:
1. Re-introduce two states.
2. Keep ALL brightness levels with the bezel loosened - and not just High, Med, and Low like on the older Fenix LD10/20 PD20/30/31.
3. Keep Turbo (or Burst) on the bezel tightened.
4. Allow enabling/disabling of mode memory.
5. Keep flashing modes hidden as they are already doing.
This way, if you like the current UI, all you'd have to do is loosen the bezel and enable the mode memory and you'd have the same UI the LD12/22 PD22/32 have now.
If you liked the old LD10/LD20 UI, all you'd need to do is disable the mode memory (Low coming on as default with the bezel loosened) and you be able to determine how the light comes on, with Turbo or Burst being the default with the bezel tightened and low with the bezel loosened.
You'd basically have two possible UIs in one light!
Also, unless you tend to use the same brightness level all the time, I find the last-used mode memory not being very useful. The only mode memory that makes sense to me is one that would allow you to set the brightness level of your choice coming on as default when you switch the light on.
... and I almost forgot: move the mode switch to the tailcap for one-hand operation!