Your posts are example of jahiliyat that has spread in muslims. Twisting and using the ayats to back your belief. I can go on with counter arguing all your posts but not much time. Just to point out the worse case of post
#37 . The meaning/translation you suggested or copied of verse 5:55 can imply that Allah contradicts himself in Quran and that Allah has partners who can protect and help people. For god sake open up your mind and don't twist the verses. The word 'Wali' means friend and in this verse Allah is telling that only Allah and those who believe in him including Prophet can be your real friends. In no way does this verse mean that you can use your friends as 'waseela' for connecting to Allah.
All other verses you posted and the conclusion you took implies that there are contradictions in Quran. Look for the word Intercession and you'll find many other verses completely fobiding intercession. Not even Prophet could ask any leniency for father (Prophet Ibrahim 9:114), for son (Prophet Nuh 11:46), and for Uncle (Prophet Muhammad 111:1-3).
In almost every forbidding order Allah always added exceptions like "except Allah wills otherwise" or "except by His permission" but to use them for concluding that some thing is already possible or allowed is a grave mistake. Yes if Allah wills or if Allah permit someone to do such and such action then we all will know when it ever happens. To conclude already in advance that since there is possiblity of exception so we take that exception in our hands is hight of ignorance. Be careful!
Finally, take some time to read other verses around the verses you posted and your confusion will be gone quickly....for example you so used 2:255 to propagate intercession but how conviniently you ignored the very previous verse 5:254 where Allah said no intercession will be accepted.
All this intercession business came from idol worshiping where people assumed that idols are intercessor to Allah and that they will save them. This practice is still going on not so far away from our beloved homeland i.e. India. Hindus do claim that idols are just various 'means' or 'waseelas' to one God. How you would differenitate yourself as muslims from such idol worshipers then? Even Shaitan/Satan, after he was banished, asked for favor directly to Allah and didn't use for example Adam (pbuh) or even Prophet Muhammad's name as intercessor. So compared to him a muslim should be shameful to think about intercession and waseela.
In case you are intrested in well researched material on this topic then read following links:
http://www.studying-islam.org/articletext.aspx?id=1345
http://www.quranicpath.com/misconceptions/intercession.html
http://www.quran-islam.org/main_topics/new_information/intercession_(P1258).html