Didn't know it was dead.
Admittedly, some stuff was very corny in ME1, but in the opening of ME2 with the Lazarus project it became clear that the overarching story arc was going downhill.
That doesn't mean that ME2 that the ME series died at ME2. The game had a lot of stuff to offer besides the main plot. ME3 reshifted the focus again and even with one game gone to waste storywise I still think the main plot has potential and could easily have been improved (meaning it is not utter crap to begin with). Seriously, look at what the other games give us as main plot: in ME1 you hunt for the conduit which turns out ot be mass relay. So what. In ME2 you hunt down the collectors, which are introduced for, well, no good reason. It does not really make sense for the Reapers to have the collectors acting (I know that the plot got changed, but I bas e my judgement on what is actually there now). ME3 has you gather allies while an ancient superweapon is built, the effect of which we don't know. By itself, the plot is no worse than the one of the previous games. Just the overall presentation is very sloppy. ME2 is deeply appreciated partly because of the design of the final mission. Harbinger, though we don't know a lot about him is credible as Reaper overlord. In ME3 the presentation becomes a bit half assed. We found this superweapon in the mars archive which we have been searching for years just now? If they wanted to use the Mars archives, they could have made the crucible a secret research project tha was found after the first contact war that nobody wnated to build in the alliance because its effect was unknown and arms restriction treaties limited firepower or something like that. The rachni stuff could easily been made optional for those that actually saved the rachni queen. Supplant the catalyst appearance by a Reaper scheme, give him a Reaper voice, have him do this stuff for being a sadistic ****, for having some strange programming by his creators or have them get rid of space faring civilizations simply before they become too powereful and are a match for them or something like that, cut away the synthesis ending and you have got a pretty decent finale. The backbone of the game is actually solid in my opinion.
A new ME game is being made right now, and since with EC some people actually like the ending and for a huge part of the fanbase they are not such a dealbraker any more, I suppose it will be bought and the ME universe will coninue. What do you mean by dead?