I'm not suggesting the imminent demise of E-D...rather an organic tailing off of further intensive development. It wouldn't be that unusual given the lifespan of games in general, waning public interest, declining playerbase...other new and exciting financial prospects in new IP's. As much as we'd like it, E-D won't have an infinite and constantly developing lifespan.
The core will continually be 'edited' with other small additions as long as there is a playerbase, however, I really can't see further massive change to the game once this series of core improvements has been completed. There has to be a cut-off point where throwing development time and financial resources into E-D won't be a viable prospect; I'd suggest we're almost at that point if not beyond it.
I'll still be playing until they flip the switch on the servers, still buying the odd cosmetic bling from the store to support FDev in a small way as a thank you for the game I've spent a few thousand hours on already...You never know, I might well be far of the mark.
Aye, I'll still play, still gripe at the pretty awful design choices as they turn up...at least until something else as unique and engaging as E-D rears it's head