...That's pretty much how it's always been.
The problem with Drukhari (and this actually is also how it's been, at least since 5th), is that they only have two or three units that are literally the best. You take your best-in-slot or best-in-Codex...And then what? Your options range from best-in-slot, to worst-in-slot, with no other options in between. There are no '8/10' options that you can fudge with 'because you like them', and then not lose because you took those units.
While many armies have a 'best build', they also have 'good builds', too (I can actually get by most games not using Raven Guard or Ultramarines). Drukhari's problem is that the best build is the only build (e.g; Mono-build).
That is slow, especially for unit that isn't in a boat.Khymera and Clawed Fiends are both pretty good at eating hordes, but are slow by DE standards with "only" a 10" move.