I’m doing a research about problems in virtual projects/teams

I have created a list of problems that member within virtual projects
experience, according to Brake, Robb, Harvey, Herzog, Oertig Cascio,
Lee-Kelly, Duarte and Snyder.

My question is for managers and member who work in virtual team/group.
Do you agree that the problems below are accurate,
Or are there any problems that shouldn’t be on the list,
Or are there any problems that I should add to the list.

Evident problems in virtual teams a
• Cultural differences
• Project members’ backgrounds
• Lack or different experiences and education
• Communication difficulties
• The geographic distance
• Time difference
• Isolation
• Lack of social interaction
• Confusion
• Unclear directions
• Humans’ resistance against new technology and new methods
• Lack of technical possibilities and knowledge in certain countries.

All help is much appreciated!!!