Can't understand the verse from "Cranberries - I'm Still Remembering"

I'm having hard time to understand last 2 lines of the following verse:

They say the cream will always rise to the top.
They say that good people are always first to drop.
What of Kurt Cobain, will his presence still remain?
Remember JFK, ever saintly in a way.

I higlighted the phrases which I have absolutely no idea what are they trying to convey
Would somebody be so kind and explain me their meaning?

Solution 1:

"What of" in this case means "What would you say about Kurt Cobain?"

"Ever saintly" means "continuously a saint," "perfectly saintly, and how!"

"In a way" means "in a sense," "in some way," "in his own very personal way."

"Will his presence still remain" is just poor phraseology or very weak poetry, take your pick.