1.The decision for a VLE rests solely with the educators not the IT staff?
Bit of both, but when it comes down to it it's prolly going to be the teaching staff using it with the kiddies.
2. All VLE's are pretty much the same, they all have the same functionality?
More or less - although some of the functionality is more, err, functional on some vle's because of the way the interface is designed
3. From the end-users perspective it does nt matter whether the VLE is hosted internally or externally?
Assuming that everything works all the time and is reliable enough then it shouldn't.
4. A secondary school and feeder primaries would benefit greatly from all using the same VLE?
Probably, but that's no excuse for the secondary school to bully it's primaries into buying the same system or trying to force inappropriate ways of working on them...
By extension though does this mean that all schools within a local area would benefit greatly? Within an LEA? Region? Country?
5. Most teachers will use a VLE as a replacement for the dumping ground that is the shared network drive?
Teachers? Use a VLE? Blimey, most of ours don't know how to log on to the darned thing let alone use it to store files...
Eventually they probably will. And the vle will need to be swept to get rid of all the stuff that no-one wants.