My family . . . back to when they came from the old country . . . were Confessional Lutherans (members of the LC-MS). However, my grandfather split from the Church, and decided to join what would later become the ELCA.
An adopted bastard, I am currently taking Catechumenate at an ELCA church near my house.
I was Jewish for a while . . . but that is a long story and not for this post.
I shall try to answer your questions:
1. I think this has already been answered. Some Lutherans do and some don't just as some kneel and some don't.
2. Lutherans can have Icons but it is NEVER ok to venerate them.
3. Lutheran's hold to the Saints (Dr. Martin Luther even started his Christian journey after praying to Saint Anne in a storm) but we DO NOT pray to them. Praying is reserved for God and Christ alone.
4. I'm not sure. Will have to investigate.
5/6. Pretty much all of the members of the LWF (Lutheran World Federation) accept gays except for the Church of Finland. Most of them also ordain women.
The key here is to visit all of the different Lutheran Denominations in your region. I did. I found LC-MS to be pleasant, and I do agree with them in some aspects, but I found their practices of Closed Communion, Non-ordination of women, and non-acceptance of gays to be rather outdated.
Would Christ truly turn away other Christians and Sinners just because they are gay?
I frankly don't understand why LC-MS doesn't ordain gays, as Martin Luther states in the Book of Concord: "Although in the visible Church the evil be ever mingled with the good, and sometimes the evil have chief authority in the Ministration of the Word and Sacraments, yet forasmuch as they do not the same in their own name, but in Christs, and do minister by his commission and authority, we may use their Ministry, both in hearing the Word of God, and in receiving the Sacraments. Neither is the effect of Christs ordinance taken away by their wickedness, nor the grace of Gods gifts diminished from such as by faith, and rightly, do receive the Sacraments ministered unto them; which be effectual, because of Christs institution and promise, although they be ministered by evil men."
Oh well. See what Church best fits your beliefs and needs.
May Christ be with you my brother.
-VDMA