2. How can we correct this? Can you isolate those who are not using the newest version until they upgrade?

No I can't. I/we only can start using a version that refuses old versions. But if lots of people using old version and with pools using it we can have a fork and a mess around coin.

3. Giving Q2C for nothing is probably not good idea however giving Q2C for voting was something else.
Of course.

I agree with you when you say that we need to make Q2C usable in some other means then just exchange. Only then will this coin arise among all these coins.
That not easy. We must create some usability for more than "pump&dump&repeat". Even BTC has this problem.