One of the splits in the d community is on the topic of template hell; on my side the story goes, with templates we will make N data structures and M of algorthims and we will get NxM programs that heavily reuse code. The other side of the debate thinks templates airnt worth the effort and make bad error messages. This other side includes Walter.
Andrei Alexandrescu has been gone for at least a few years, theres no one to push this goal forward, or even to defend old ground. I dont know if my side is 10% of the d community or 70%, but I use d for the best template hell available.
If Walter dictates that Phobos should use less templates and the person managing Phobos doesn't even like template hell(I believe both of these are true); ranges are unlikely to improve in any respect for v3, and a very ineffective and painful attempt to minimize template usage of std.algorithm
will be done uselessly. The job of writing range related code should go to literally anyone else who likes templates in an attempt to fill the job Andrei Alexandrescu left.