You know what Blizzard did different from SE? They advertised their game. Even here, in my country with barely 5 million inhabitants in total, there were ads for WoW on the tv. I can go to any store here that sells pc/console games and the employees all know of WoW, but nobody's heard of FFXI.
If you really believe the current changes to FFXI will bring in new players in any significant number, then I don't know what to tell you. But I would suggest you dedicate a day or two to reading threads (in more than one section) on this forum and also on Ffxiah, and unless you're lying to yourself you will see the number of people unhappy about the current changes greatly outnumbers the people that are happy about them. Of course, not everybody reads forums, or post on them. But I personally know several players, on different servers, that have quit (or they're still playing only to pass the time till XIV's released) because of the current state of the game. And guess what - some of them don't own a single R/E/M.
I've played this game for 7 years. I have never taken a break, the longest I've gone without playing was after the earthquake in Japan when all servers were shut down. I've frequented FFXI forums on a daily basis (mainly Ffxiah, BG, and this forum after it was created) for 6 of those years. And I can assure you that nothing SE's done before in those 6 years has had a remotely similar impact on the players.
By the way, you still haven't answered my question so I'll ask again, rewording it a little:
Would it have hurt for SE to have set plans on how to upgrade R/E/Ms to still keep them relevant, in addition to implementing Delve and Delve weapons? You talk about keeping customers happy - wouldn't that have made everybody happy - both R/E/M owners and those that never had any intentions of making one? If they'd done that, people would still be doing both versions of salvage. People would still farm currency. People would still do ADL. People would still do VWNM. People would still do all of that, and not idle in Jeuno or Adoulin, waiting for the next plasm farm shout or 5 NM+Tojil shout. How could that possibly be a bad thing?