Agreed, or we could simply have him be dead I suppose, and her brother be the one deciding?
That should be doable, the Count of Paris died in 1894, just have his health decline a little faster and the decision will likely be left to her mother/brother, who hopefully are more understanding.
Prince Eddy marries May of Teck as planned; Prince George marries Alix? He and Nicholas strongly resembled one another (and he is not Russian Orthodox)
Tsarevich Nicholas marries ?? of Greece or Romania or some such.
Probably not. Unless Ella suddenly decides to marry the Grand Duke of Baden instead of heading to Russia (which would really only be in a "Grandma Victoria liked him, now that she's dead I feel obligated to marry him" scenario. Simply put it, you have to find Alix someone else to fall head over heels for before she meets Nicky (which was 1884 IOTL, and even if Ella marries outside Russia she's destined to meet him at least by the Helene/Eddy wedding). George and her had no attraction to each other (George was into Missy of Edinburgh, which got scrapped by her mother who hated England and resented Alexandra).
As for Nicky, if not Alix we have a lack of options that were seriously pursued IOTL. Romania has no princesses (unless you consider Elisabeth's nieces who are a bit young for Nicky, or Carol I's who will face the same Catholic conversion issue Helene did). Greece has princesses, but they're Nicky's first cousins which is a dicey subject in Orthodoxy (Given Nicky squashed several first cousin matches during his reign, specifically between Michael and Beatrice of Edinburgh, I doubt he'd agree to it). Other than that you had Helene (who is going to England here) and Margaret of Prussia (who faces the uphill climb of being Prussian and Willy's sister). He likely marries someone from a random German family that isn't too close with Prussia (as a respect to Minnie who, like her sister, hated Prussia) or one of the many Montenegro sisters.
May of Teck is a good candidate for Duchess of York, although I worry about her chances given she was the extreme compromise candidate (Edward VII hated her mother and her family was in debt up the wazoo, the only reason she was chosen was because she was the only candidate who met Victoria's standards and combined being German enough for Victoria while not actually being German, which was a dealbreaker for Alexandra). If we go for other options proposed for Eddy, his cousins likely get nixed by Alexandra (Helena's girls for their father being a prince of SH which Alexandra insisted belonged to Denmark and Mossy for being Prussian, who also stole SH, and having Willy as a brother, who both of the Waleses loathed). Also in the mix will be Alexandra's Danish and Hannover nieces (although they're a bit young), and some random Germans who will have to prove they aren't too German for Alexandra's tastes (rule of thumb, if they opposed Prussia, like Hesse or Hannover, they're ok, otherwise it won't work).