I thought there would be less restrictions on timeline? My husband could be done in as little as two years. What if we want to stay? I though there was more flexibility on time limits as a tier 2 - as a tier 4 we can only stay a limited time after he is done.
I may be over thinking this.....
Yes, there are less restrictions on timeline, but the problem is getting a job that will enable you to get a Tier 2 visa in the first place... if you have permission to work in the UK from a Tier 4 visa, then the UK university can hire you much more easily than if you need a Tier 2 visa to work.
As a simplified example:
University: Do/Will you have permission to work in the UK?
You: Yes, I will be applying for a Tier 4 Dependent visa in August, as my husband will be a student here.
University: Ok, great - that means we don't have to sponsor you for a visa. The job is yours, starting when you arrive in August/Sept.
Or
University: Do/Will you have permission to work in the UK?
You: No, I will need to be sponsored for a TIer 2 visa.
University: Oh, well, unfortunately, if you don't already have permission to work in the UK, then before we can offer you a job we will need to advertise the vacancy across the UK and the other 26 EU countries for a certain number of weeks, and we will only be able to offer you a position if we cannot find anyone qualified for the position out of the 500 million people in the EU. Then, after that, we will need to apply for a certificate of sponsorship for you and for your 3 dependants, which will cost us money and will reduce the number of visas we are allowed to allocate to other workers (who cannot qualify for a different type of visa) for the rest of the year.