Having been Protestant, I can say say with certainty the following:
a) Most Protestants believe that “prayers to saints” are superstitious.
b) Most Protestants do not believe that we, on this side of physical death, can or should try to contact those on the other side. However, I’ve still yet to understand the many who say when someone dies, “Well, they’ll be watching over us in Heaven” or “They got their angel wings today”, etc.
c) Many Protestants believe the word “saints” in Revelation refers to the Christians still on earth; not necessarily those in heaven (for whatever reason

)
d) As you mentioned above, most Protestants have a problem with “praying” to saints because they believe that our prayers should go directly to God. Their problem lies in their faulty understanding of and our cultural use of the word “pray”. Since, typically, we use the word “pray” in conjunction with God instead of its real meaning which is “to ask”, a huge misunderstanding of a Catholic’s intent gets created. Honestly, I prefer to use the phrases “pray through the saints” or “ask the saints to pray for me”.
e) Most have never thought through their objection; it’s an automatic rejection because of their rejection of the Catholic Church. I know I was this way until a friend pointed out that I would have no problem asking another Christian to pray for me if I were in need so what is the difference in asking a saint (
WHO IS IN THE PRESENCE OF GOD) to also pray for me. As the Bible says, they are more alive than we are and surely their prayers availeth much
Also, I would add that there is much confusion in Protestantism about exactly what happens to our souls upon physical death. I know that that I grew up with never a clear picture of that. Two of the “theories” I heard were that our souls went immediately to heaven or hell or we went into soul sleep until the resurrection.