I can accept most of your points but...

Originally Posted by
byquist
As far as Kent, he is there alive at the end so he survives the ordeal.
Is he alive? By the final scene, Kent is devastated and ultimately loses the will to live. In Edgar’s words:
Told the most piteous tale of Lear and him
That ever ear receiv'd; which in recounting
His grief grew puissant, and the strings of life
Began to crack.
And later, declining the Kent says:
I have a journey [death], sir, shortly to go.
My master calls me [from the grave]; I must not say no.

Originally Posted by
byquist
As far as Gloucester, I wouldn't be supporting a retribution either by an abstract law of some sort or a Supreme Being.
Whether for Gloucester of Lear, would you support a divine retribution very familiar to Shakespeare: "for whatsoever a man soweth, that shall he also reap"? In this sense I argue that "The Gods are just", though harsh.
As Kent prophesies in Act I,
Kill thy physician, and the fee bestow
Upon the foul disease. Revoke thy gift,
Or, whilst I can vent clamour from my throat,
I'll tell thee thou dost evil.