Definitely screens are worse than in French or English.
You're right, a scrollable viewport may help but I really think the GUI must be fully re-write for small screen - a simple port is not enough. In my version, I have only worked on menu entries...
Qt is simple, if you have some time for Keepassx on Maemo, do not hesitate to create an account in garage, get project with git and add some debian patches over the mainstream code !