Well, apart from the reality that the Bible tells us we have only ONE mediator between God and us (Jesus, 1 Tim. 2:5), at least the likelihood is there that the saints Catholics pray to aren't "dead" in the best sense of the word...being in the Lord's presence is a rather "alive" experience...I can't say the same thing for Smith, who relished heading off to a place he referenced multiple times as "everlasting burnings."
In context, Smith discussed spirits "blessed in their departure" to "the world of spirits."
Now what kind of environment do these "spirits" depart to? Well, let's look at Smith's quote here:
"The spirits...are blessed in their departure to the world of spirits. Enveloped in flaming fire, they are not far from us, and know and understand our thoughts, feelings, and motions, and are often pained therewith." (Teachings of the Prophet Joseph Smith, p. 326)
I think in the place opposite of heaven, where we won't need light 'cause God will be that light, you won't need "heaters" when people and demons are burning.
There's few...
...pains worse than the immediate and long-term aftermaths of horrific burns;
...sins that provoked God more than idolatry -- putting another god in in place of God, or alongside God. Even if Mormons say they don't do the former, well, there's a reason they are called "latter"-day 'ain'ts.
I would say of all the teachings that was most horrific about what Smith taught, the "everlasting burnings" breakout teaching late in his life...was the topper...1844:
"...you have got to learn how to be Gods yourselves...going from one small degree to another, and from a small capacity to a great one...from exaltation to exaltation, until you...are able to dwell... (Teachings of the Prophet Joseph Smith, pp. 346-347)
Well, "until you...are able to dwell" where?
WHERE were the "ghost-lights" -- the demon-lights of Smith telling him where he & his followers would dwell???
The answer is right there on p. 347 of Teachings of the Prophet Joseph Smith:
"until you...are able to dwell in everlasting burnings."
"The spirits...are blessed in their departure to the world of spirits. Enveloped in flaming fire, they are not far from us...
Whoaaa.
Smith must have felt the guilt gnawing at him from no assurance of forgiveness of sins; but he wouldn't let go of his "everlasting burnings" teaching late in life: "Those who have done wrong always have that wrong gnawing them. Immortality dwells in everlasting burnings." (ToPJS, p. 367)
This is how we Mormons celebrate Christmas:
http://lds.org/broadcasts/archive/christmas-devotional/2011/12?lang=eng
Happy Birthday, Jesus, and a very Merry Christmas to all! We are all abuzz with excitement this time of year when we remember and celebrate the birth of our Savior. No other Christians celebrate His birth, His life, His Atoning Sacrifice more enthusiastically and with more love than we members of The Church of Jesus Christ of Latter-Day Saints.