Personally, I think you're part of the problem. When you say, "...I made clear to my guildleader that i wanted to build a raid with 'my' people, whom I knew from icc...", you are exclusionary and people instantly can see that. You also moved your main to a progression guild. If you can't raid in this guild on your main, why are you still there? If I were in your guild and saw you complaining about lack of progress while running off to down yet another boss on your main, I might not be civil and I'd certainly think 2 or 3 times about going in a raid you were leading. You're not helping inspire confidence that any bosses can be downed when you can't raid with them on your main and you'll only raid with 'certain' people.

Advice? Leave this guild and join the one where your main is. Your exclusionary attitude does not bode well for people respecting you as a raid leader. Don't kid yourself. They know.

If you don't want to do that, then offer to take 10 people into a raid. Take the first 10 who sign up and meet whatever criteria is needed for the raid. Don't take 'your' people. Treat them with kindness and courtesy, even if you wipe six times. Expect there to be a learning curve and that people need time to learn an encounter. Don't yell or scream at someone even if they always stand in the fire. This is a test run for them AND for you. If you can be calm under the pressures of leading a raid with a variety of people, it will quickly follow that you can lead and people will want to raid with you. Then, if the trial raid goes well, do it again with completely different people.

It's about respect. If you don't respect the people in your guild, they won't respect you.