Yes, a custom engine in my case. I was just saying it's worth it if you can do it with your pipeline even if it's just for far LoD.
I was trying to use general terms, and I'm not a graphics engineer myself. Perhaps it's because I come from a tooling background. I'm just saying a stable "dither to alpha" and scaling alpha with MIP/LoD seem to be about all you need to get to deferred for general use.
ie to avoid the alpha test issue where leaves can 'disappear' when in far distance just takes a few lines of code. Alpha Hash / "dither to alpha" can be used like a cheap OIT solution in this case with screenspace stabilization without needing temporal solutions.
