I can see your point mate but i personally think it is much better on different sites. To me, vB.org stands out as a proper site, whereas vBT is behind. If someone here sent you to vB.com for a template thing then they are idiots

If its a question about something in vb or a normal vb error or such such, then vb.com
If its changing vB's templates or styles then its vbtemplates.com etc
Also i think they were given their own sites to offer more support than all beeing in one place