I know what you guys are aiming to do here, however I feel you will be directly competing with buildmyled with this new feature/fixture, and they are steps ahead of you with having the separate controller coming out shortly. Obviously the R&D has been spent and it will be a wonderful fixture I'm sure, however you should play to your strengths going forward.
Excellent PAR for a given $ price, and many options. You already have 4 solid fixtures for respectable PAR/spectrum coverage. If higher PAR is desired by users, multiple fixtures can be used together.
I feel you are missing just one item to solidify your niche. An inline inexpensive controller cheaper than buildmyLEDs was/is the perfect direction to head to. It doesn't have to be a full controller, but just an LED controller that works for multiple fixtures doing dimming and ramp ups/downs.
For instance I have a custom 100G super long coming in the next few weeks, 90"x14"x18"s. I will be using 2 48" planted+, and 2 36" planted+. What I want to be able to do is have a really long photoperiod (IE 15 hours)[want this for all of my tanks]. I want the first 6 and last 6 hours to do ramping. Leaving the middle 3ish hours or so at 100% for the fixtures.
I do admire adding a more powerful fixture, as that is needed as well, but adding non-backwards compatible features is just hurting yourself. Sometimes people just want low/medium light or a precise amount with a certain overall tank coverage. With your wide LED lens that you use for your fixtures users get decent coverage. The amount of power/heat to go higher power just isn't going to work well with a wide beam lens.
For instance I was forced to go with 2 buildMyLED fixtures for my 36"x24"x36" 135G cube. I know this tank is an "outlier", but still I went with 2 of their newest fixtures that have the extra boost (40ish%), and went with 60 degree lens on one fixture and 75 degree on the other fixture. (I do use a 36" planted" centered for again, coverage).
I feel most individuals don't mind additional fixtures if they want stronger light, as long as the price is right and it does what they want. Sure sometimes there is the space issue, such as with the 37G where I can only fit 2 of your fixtures (ray2 and planted+).
However I do appreciate the effort you guys are putting and have to try to get to this point, you just should play to your strengths more.
Current is finally getting the PAR to compete with their newer fixtures, however they were focusing on a crazy remote feature, instead of PAR.
BuildMyLED and the top brands all have a crazy $ tag, customization and power.
You have the PAR for the right $$$, just need to add the desired features of ramping and dimming into a controller that can handle multiple fixtures.