Maybe I'm crazy but you could see Yukon merged with Alaska. Provincial status? I don't see it happening until maybe now. The economics do not make sense, secondly Ottawa would not want to give up control over that many resources. The North has been "opening up" since the 70's and neither have been provinced. The beginning stages, sure, NWT has been split.
Secondly, Alberta never wanted a partner in oil production. They always wanted to be The producer. They fought the National Energy board not just because they had to sell to the rest of Canada at a lower rate but because it encouraged petro-exploration in other parts of the country, ie Altantic off-shore which had been discovered to have bigger deposits and better quality. A direct threat to Albertas domination of the Canadian market.
To me, if Alaska was Canadian, there would have still been two territories.
Alaska would have had enough people for provincial statues in 1905, especially with the Yukon attached. It would have at least achieved it by 1950 at the latest.
A second oil producer is ALWAYS a benefit in parliament, Alberta would never scuttle another province's resource ambitions because that might actually inhibit their own. Why would Alberta scuttle Alaska's oil, when they're probably owned by the same producers? They never did it with oil exploration in the Northwest Territory. I have no idea where you got the idea that the NEP was fought over oil rights offshore in other jurisdictions, it was almost exclusively due to selling it to eastern Canada at a loss. Alberta lost hundreds of billions of dollars of GDP over it, and eastern oil wouldn't have affected them virtually at all.