Ideal Variometer

I have a few suggestions for the way my vario, an LX1600 should work,
ideally.

I would like it to switch between "STF mode" and "Climbing mode" when
I hit lift or sink. Ideally it should switch to climbing mode when I
hit lift that equals or exceeds my MC setting. Of course there would
still be a manual override switch when you are low and/or scratching.

Do other vario manufactures set up their varios to work the way I
describe? If so, which ones?

Currently it switches between modes using three methods all of which I
think are inferior. It will switch to Climbing mode when I start
turning, when the speed drops below a set value, or when I manually
switch modes.

How do other manufactures do it?

Thanks, Ryan