There has been some discussion in the admin/dev chat group. It was too long to copy verbatim, so here is a summary:
The density of the modern UI needs some work. The classic UI is not pretty, but it is efficient and effective.
The classic UI does too many things at once for day-to-day use. It has 2 overall function groups that are integrated: configuration/administration and end users. User permissions and view levels go some way to addressing this already. Although not universally agreed, perhaps once the initial config has been complete (Wizard) then then config could be hidden behind a drop-down menu or an icon.
Some thought was given to having 2 UIs, but profiles controlling a single UI seemed preferable. This opinion was not universal, as some saw the existing config tab as being unobtrusive enough.
A timeline EPG was mentioned as being highly desirable in a modern UI. The ability to filter the EPG grid by channel was mentioned as was the ability to perform a search.
Perhaps there should be 2 EPG tabs, one for the classic tabular format and one for the modern timeline format.
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With respect to EPG search, my personal opinion is that it should be possible to search via CRID for other occurrences of this episode as well as other episodes in this series with the ability to set recordings for found events directly from the results list. The search should indicate if the event is already being recorded, or not, which can be set with a single click or maybe checkbox or slider switch. Full search capabilities based on title / description / genre / time-of-day / channel / bouquet / etc, should be considered standard.