Either way, this is having a discussion with a dead person (or more than one)...otherwise known in the Bible...like the book of Isaiah, for example, as necromancy.
Praying is talking; praying is appealing...and what you describe is both talking and appealing.
The Bible makes it clear there's only ONE Mediator between the Father and us -- Jesus Christ (1 Timothy 2:5).
Not hundreds. Not thousands.
Incorrect. Those who have died in Christ now live in Christ. They are alive in heaven and are actually more alive than we here on earth, often dead in our sins, are.
Unless the promise of eternal life is false, invoking the saints is the precise opposite of necromancy.