Usually I don’t ask people to pray for me, because I don’t like being a burden to other people.
But if I asked people to pray for me, it would be living people who only pray to the Savior.
I wouldn’t pray TO dead people and I wouldn’t (because it is not possible) ask a dead person to pray for me.
“For the living know that they shall die: but the dead know not any thing...”
That quote, I think, is from before Christ, who revealed that the ‘faithful departed’ are not dead, but living. I’m sure you know what He said about Abraham, Isaac and Jacob.
This is why, historically, Christians have always asked for and received the intercession of the holy ones who have gone on before us. It is because of the realization that they are alive in Christ. We a reunited to them in bonds of love, which is stronger than death.
Also, I would not consider it a burden to pray for you. I do, in fact, every day!