Just reinventing the wheel to not having to use Powerbuiler makes a lot of sense to me. Even if it takes 20 years. Even if it only covers the trivial features. 5 years ago, I used to work on two huge Powerbuilder projects. I don't remember having real models or support for them in Powerbuilder and these projects. Everything was just datawindows, embedded SQL and stored procedures. I'm really glad that I'm now working on a web application at a different company.