That's the original 1993 The Edge Nick. It's shown in the catalogue on here. There's also an article about one in the archive somewhere. I think it was only sold as a frame/forks, so it isn't listed in Bikepedia. The one in the catalogue has a quill stem, so yours must either have a quill-ahead converter (can't quite see) or a later fork?
I agree about losing the bar ends, but it could be that the risers suit the character of the bike. One thing about the design that is clearly a mistake in my view is that early xc-oriented full-suspension bikes kept the long low stem and flat bars that were still considered the only way to go for xc. But they don't really work with xc full suspension. I'd keep the riser bar and use a shorter stem with some rise. Could be quite a good bike to ride then.
Personally I'd fit Maguras to the front as well. That disc must weigh a ton, and you're doing the fork no favours if you don't minimise the unsprung weight.
All seems in superb condition. Knowing you, you paid about £50 for it I expect.
I would say it was the 1994 version, the sloping seat Q/R (1993 in the catalouge is part of the frame for some reason... well that and the decals are like the 1994 and not 1993 one, also cable routing is underneath (1994, they where on the top 1993)
I would also say most including the forks where after market addons as in 1994 the Edge did not come with AMP forks.
Yes it is an M900 XTR cahinset, and teh 1992 version if the rings are original. A 'bodge' shimmed front mech (M901) as well
Saying that, Rocky Mountain could of course alter their bikes to what is shown in the catalouge.