Firefall got into trouble early with its beta policy of always being on 24/7 in early beta (too early!) and promising never to wipe chars. This combo created a huge issue for designers as systems were not just ready to promise or keep up with this.
Ember will have weekend testing or other forms of reasonable limits restricted to backers, and won't start a general beta until much later. Progress will be wiped before launch on anything but the PTS servers, most likely.