L Visa

I am a British citizen with Canadian permenant residency. The US office of my company (I work out of the canadian office) wants me to move to the USA to work on a L1. My wife (canadian) and 2 children (canadian/british) would move with me.I am concerned about 2 things, the first being what happens if I leave the company or get laid off? It's a huge issue since we would have uprooted a good life in canada. Secondly I am not completely sure about the company. Its a new employer and they seem to be pressuring me to make the move. I am worried that they could simply lay me off whenever they want which would cause turmoil if we had to move back and start again.

I am going to India for my wedding, I plan to do my L1A stamping and get an L2 for my wife. Now suppose my L1A stamping is denied, what happenes to my existing L1b petition which is valid till 2011 Oct? Can I use that to file and L2 for my wife and return back to US?

I have come to US through my company with my L1 Visa. I am currently working with my client. There is an agreement between my company and my client not to hire my company employees within 6 months after quitting. I cannot move to any other company here in US as i am on L1. My company is not willing to file H1 either. If I have to move to a different company I should have a H1 Visa filed.
Recently my client offered me to join their company, but I don't have my H1 and i cannot join my client company even if i get my H1 because of the 6 months restriction. What are the different options to join my client.

I have completed 6.5 yrs in L1A in managerial role. Now the same employer wants me to stay outside of USA for few months.
1)Can we apply EB1 while being outside USA?
2)Do we have to apply for L1 A extn for remaining 6 months of 7 yrs while applying for EB1?
3)Can a new employer sponsor L1A and apply for EB1 while entering the country?

What is the chance for a L1A visa holder of 7 years to qualify for a EB1 category. Catch here is the original company which provided the L1A visa will not apply for GC. If the person moves to another company on H1 Visa can the new company file for GC under EB1 based on the previous 7 years of L1A status .

I came to USA as L2 with my spouse, after leaving my job. Now my parent company is asking me to take up their assignment based at USA. and also asking me to confirm the possibility of starting their office at States.
Is these possible? at least working for them is possible. I have my EAD. Can I work and take salary from outside USA firm?

I am working in US with L1B Visa from company A, now I have my H1 petition approved from the same company had applied to me before I had L1B. Now is it possible for me to change my Visa status from L1B to H1, if yes then what are the situations under which I will be able to change as I am planning to change the company.