I think I'm waiting fir the next leap in technology...like a more efficient yet SMALLER led or higher voltage higher runtime battery.
I guess i'll be waiting a long time.
In the world of processors, cycles per second is everything (hertz, khz, mhz, ghz). Not to long ago, processors which had doubled in speed every few years, starting maxing out in the 2.5-3.5ghz range. With speed development at a crawl, they started focusing on size and cores. Make cores as small as possible and cram as many of them on a chip as possible. So instead of one 2.5 chip, you have 2x2.5 or 4x2.5 = 10ghz.
In LEDs, the closer we get to the maximum theoretical efficiency (lumens/watt), the smaller the increase possible for a given amount of time or investment (diminishing returns). So for a given density, the only option for much more light is a bigger die. But the bigger they go, the harder they are to focus (less throw).
Which leaves multiple LEDs (lumen cores) and features. The further along we get, the less important will be things like lumens and the more important, things like tint and UI. Its to expensive to use multiple LEDs just to get more runtime, so you'll have to wait for battery evolutions for that.