Is there a plan to have the Vue client replace the existing web client at some point?

[niels]

The vue client will not replace the existing web client. The two clients have different goals (existing web client implements everything, vue client does not) and compatibility (vue client only targets modern browsers while the existing web client also supports old devices like webos).
We are looking into ways to make the install easier (e.g. switch the default web client), but no decisions have been made in that regard.