One is glad to be of service.You fiend. My entire Thursday got sucked into this!
And while I am talking Asimov...
For starters, this is a rare find in that it is a fic set in Isaac Asimov's sci-fi Foundation series. Though it doesn't have it quite as bad as Black Company fans, the Foundation series does have precious little in the way of fanfic.
To follow, the quality of the writing is quite excellent, easily in the level of some published works. Next to no issues with grammar or spelling, good handling of description, action and dialogue.
To finish, this is a conclusion to the Foundation saga and a mostly satisfactory one, at that. It even goes so far as to incorporate the not particularly inspired non-Asimov novels of the second Seldon trilogy. This more than anything else is what left me in awe when I first encountered this fic some years ago.