Sadly, having done this type of work before replacing existing systems with better UI is seen as a waste of resources and Bulding new systems involves rediculus levels of paperwork and changing requirements.

I once worked on a project that spent 7 years in the planning stages and they decided to take a 6 month break from development after the first demo to reevaluate things. Not because the demo had issues, they where not sure if this was the correct approach.

A different project was considered a complete success except we increased productivity to much.