Aren't you confusing QBasic with some older BASICs? QBasic is a structured language. It has blocks, functions, different kinds of loops, custom types... It doesn't require gotos or line numbers, though it supports them for backwards compatibility.
The lack of anything like a pointer or reference type is more significant. That and pointers to code would go a LONG way to adding useful expressive power to the language. As things stand right now, there's really no way at all to abstract control flow, which makes a number of useful programming styles very difficult to implement, if not impossible.
For reference, the Microsoft BASIC 7.0 implementation contained about the only implementation of a GUI (text mode) framework that did not use pointers to functions. The result was something that worked, but had immense amounts of repeated complexity and boilerplate code.
