Whenever I feel the need for another expensive light, then I know EXACTLY where to shop, and I generally get the light that fills my perceived need.
If I had to narrow down my collection to 2 lights that I would really miss, then it's the Surefire 8NX I use at work, and the SF L1 I use at home. I have many others, but in many cases, they are 'want' rather than 'need' lights.
I think the industry (I will refer to SF, as I'm more familiar with their products), has reached yet another plateau, LED lights are making big inroads into the EDC of consumers, and they now have long runtimes AND adequate brightness (sometimes multi-level). In order to keep on selling expensive lights to people who already have many expensive lights, they need to offer something 'new' and exciting. The SF Kroma is a good example of this, it's got the coloured LEDs (Aviator), the multi level light with optic (L1), and now, we have BLUE LEDs too ! I would probably consider the Kroma, if it offered colour options for the LEDs, maybe UV or NVG green, instead of blue.
I have a SF M6 on the way to me at this moment, so I'm no stranger to paying the cash to get the light, but I find that these days, I appreciate smaller, simpler lights more. My EDC in my jacket is a SF 6P, and also a SF M2 with HOLA and SW02, and I always have an ARC AAA-P on a neck cord.