You should be happy to know that the Catholic Church ascribes no special power to someone being made a Saint, although some Saints certainly have had miracles attributed them as a part of private revelation.
(Private revelation is never binding for any Catholic to believe in, as opposed to public revelation which consists of that which was handed down to us from the apostles, including the Scriptures, and whose tests of authenticity includes being in accord with the Scriptures.)
Catholics believe that since the souls of the justified do not perish, it is fitting to ask people, living or deceased, to join them in prayer. However, there is a grave danger in asking the deceased to pray with you, for you do not know whether the deceased is in Heaven or Hell, and you always want to be certain that the will of the one you pray with is always in accord with Christ. Therefore, there are certain souls whom the Church has found to be safe to pray with, for it is certain that they are in Heaven and that their wills have been sanctified to be in perfect accord with Christ. These are the firstfruits, whom the Book of Revelations clearly depicts as viewing the events on Earth below, praying to God, and offering up the prayers of the faithful below as incense before God.
Those Saints who have been formally recognized as Saints are by no means anywhere near an exhaustive list of all those who have become saints, merely the ones that the Church is certain have become saints.
The whole sainthood thing is stupid.
People are not saints. None of us.
There have been prophets with revelations from God, but those are also frail, flawed human beings.