In a Dungeons & Dragon-ish sort of way each of these sacrificial moral deaths resulted in the main character carrying on traits and increasing their strengths, as such:
Daenerys - she lost Drogo, Rhaego, and Mizza when she "died" and became resurrected through fire - ater that point she was rally no longer a child (similar to kill the boy Jon Snow) - that was the beginning of her 2nd life - 1childDaenerys1teenDaenerys3adultDaenerys - there is always a cycle of 3 as a hero character gets stronger - right now show Daenerys is at full strength - although she will make mistakes her character *shouldn't die again
Stannis - I like the broken man Stannis - his character glidepath theoretically should be .. 1immatureSelfishLordWannaBeKingStannis2brokenManStannis3mortalManKingStannis - I suspect he returns at the end of Season 6 a broken man, making efforts to reconcile his life and contributing to the bigger cause he now fully realizes - and he doesn't have to be King to do that - he could be a mailman letter deliveryguy .. but his end-fate is to become the mortal man King of the north perhaps, maybe Westeros if there is anything left in the South of King's Landing
Tyrion is more complexx he has had effectively two different loves of his life - two of whom resulted in death as part of betrayal by his false father Tywin - Tywin was neither really biodaddy nor social-daddy of Tyrion - and it will be revealed sooner or later - perhaps by him riding a dragon - that either Aerys da MadKing (or surprisingly Rhaeg's) was his real father - he could even end up as a hidden Blackfyre, ironically - (don't hate too much on this comment) so Tyrion is 1childPlayboyFellInLoveWithAfakeProstituteWhoInTheEndWasSaidFalslyToBeAProstitureGuySetupToFallInLoveWithAnoterhFakeProstituteShaeThenBetrayedAgainButNowMoreMatureAlmostAManGuy3WheneverItHappensHeFallsInLoveAgainWithANOTHERprostituteInEssosButThisTimeItWorksGuy ..Tyrion has an affliction with goodly working women- obviously - whomever the 3rd woman is he might succeed as being CaptainSaveARedWoman - irony - Red Woman - Tyrion falls in love with a RedPriestess Prostitute - in the books there is one in Braavos - perhaps in the show she is moved to Meereen?
Hodor - I see the Hodor situation a little differently as his no-so-small-part personal sacrifice towards teh much larger mission of Bran's in saving the greenly world - which is Bran's Paradoxical dilemma - does he choose to save his family (Hodor, Ned) and makind, or does he choose to save the greenly Earthy Westeros/Northeros (Planetos) - Hodor appears to be Bran's first death (rest assured, Hodor will be back in the end as a normal manXGiantChild), Brans second life revellation might be that the kNight's King actually kills Bran, so he has to learn - and then Bran's final and terminal life status will be when he realizes he needs to cut off his own arm and wield a special magic sword himself in his dreamstate in order to kill the Others - if he even kills the Others .. so Bran is 1BranRemorseFor Deathof HodorChildBran2BranDreamDeathBykNightKingTeenBran3TrueSuperHeroBranWithMagicSwordAdult
Wall of text - but for those D&D oriented sci-fi'ers this is the glidepath of these characters - easily figured out when using the pattern of 3-life regeneration