Good to see your school is moving in the right direction with regards it’s ICT. In our school, we use laptops/ iPads and tablets with the students. I think that the laptops are best personally as they give the students the experience of the keyboard and tend to be much smoother at running programs such as Minecraft Education. I would suggest that schools move towards purchasing laptop carts instead of Ipads/tablets for these reasons. The criteria you have discussed above are all very important for successful lesson designs. 21st century skills such as collaboration, Problem solving and ICT skills need to be inclusive to our lessons. It is something i am sure we will find difficult to do with the restrictions we will face in the coming months but these skills are now more important then ever for our students.