This first sentiment is the most eloquently put thing I've read in this whole thread, bravo.
As far as the questions are concerned, the answer to the first one is pretty much irrelevant, because of the second one. Furthermore, I think the second one needs rephrasing. It may not be "the only way" to regain a competitive edge, but it would be a SIGNIFICANT boon, particularly for progression's sake. See also: my "let the RDMs be and let the BLMs be" anecdote.
To be completely honest, given a magic wand to create a perfect world, I'm not sure that I personally "want" a Raise ability on BLM either, I'd much rather side with Remedi in Raise being less accessible by removing it completely from the caster pool. My staunch arguing in this thread at large has been about the sake of role balance, which is why BLM needs to have it. So really, the second question becomes not "do I believe" but "for the sake of balance of the game at high-end, should it".
Assuming they allow RDM/SMN to keep their Raise abilities and BLM is not given one, no matter how much better damage/more mobile BLM becomes, it's one less recovery tool for the group for having chosen BLM over the other two casters. No other role in the game is in this rather unique scenario; both MCH/BRD have meaningful utility (do not underestimate the value of Dismantle), and the melee role not only gets two slots "guaranteed" but ALL of their "recovery" tools are additional actions (save for Mantra, I suppose). This is why this problem exists in the caster role, and why it has been exacerbated so heavily since 4.0 launch with the release of RDM (by extension, expanding the caster role options).
So, the answers to your initial questions, for me, are honestly, no and no. But consider the following questions, very similar but painted differently:
1. Do I want role balance by giving BLM access to a Raise ability?
2. Do I believe BLM having access to a Raise ability would factor in SIGNIFICANTLY for its competitive edge particularly during raid progression?
The answers to those two questions are yes and yes, at least for me, and I would warrant a large portion of the endgame community would agree, "lore sideshow" aside.