Surely that depends on if the suite is being used to its full potential. Having an empty suite when they are in is not a good idea but it tends to happen as some teachers either a) don't want to risk anything going wrong or b) feel they have to teach one of the basic subjects in class, teaching to the tick list.
At one school, it was muted that the ICT suite was to be phased out so rather than having allocated slots its just open to grab on a booking sheet and that seems to work better and looking at the sheets shows the suite is well used. It allows a little freedom and also allows people to have their set slots if they still feel they need to. I think the focus really needs to be not do we need an ICT suite but what are we actually teaching in the suite, too much time its just used to 'copy' up work and depressingly when I look through folders quite a lot are just Word documents.