Plus if you could use WASM modules as opposed to node systems, you would have a more powerful programming environment - for example, the mentioned "repeat" zone doesn't have "break" functionality, so you need to use a huge number of iterations and do an equivalent of "continue" once you're done, but even if you perfectly estimate the number of iterations you will need, the implementation is very slow. There are other problems like limited scope access, or in general slow node evaluation which make sequential algorithms (not reliant on parallelized work done by loops internal to many nodes) problematic.
