To be frank, I don’t see the benefit of convergence. Admittedly, one code base is cool and convenient, sure but if one considers the additional cost of design, maintenance and the loss of the optimal user experience, I think convergence is rather a minus. A small touch screen requires a totally different convention of user interactions as a big screen with only mouse and keyboard support. It’s simply the reality.

Instead of trying to reinvent the wheel (admittedly a new and shiny one), why don’t we just stick to the well proven approaches and design different UIs and front ends for different platforms? The bulk of the codes would go into the common business/security layers anyway. With CI/CD, each user would have his/her app with the same functionality but different UI for the optimal user experience without much headaches or additional burden.