The spawn and the Warder are accessible. They're just not easy.
All it takes to kill the Warder is patience and a little luck. I've camped the Warder maybe a dozen times. It's not hard to kill, if you're there; but because the spawn window is so broad and so variable, it's a difficult spawn to be there for unless you're willing to invest a lot of time. I've gotten the kill twice, and shared it with other folks maybe half a dozen more. The rest of the times, I just missed it altogether.
If you don't have the patience to camp the Warder, you can still get the devices it drops in trade. I got my most recent FoC that way, as part of a trade for an aa device I prospected a few weeks back.
So -- the Warder and its drops are accessible. They're just not easy. As long as they're accessible, I don't see why they need to be changed.