So I'm developing a human variant Devotion paladin, Protection Fighting Style. I'm basing him around Inspiring Leader, RES-CON, Aura of Vitality, Sanctuary, Aid, Beacon of Hope, Protection From Evil (self) and such.
What do y'all think should my stat development be, considering I don't think that STR is necessarily all that critical to me (despite what your guide says!

)?
I reckon I should focus on CHA and CON. I can always employ Smites for when damage output is more urgent, but essentially keeping everyone else up in the fight for longer is the key, massively improved starting HP, healing throughout as necessary.
I'm currently 10th level, I'm looking for what you think my stats should be at 12th, 16th and 20th levels, and whether I am overlooking any critical spells or other aspects.