My only wish in tiddlywiki: is this possible? Where should I start from?

Here’s a quick and dirty approximation, perhaps helpful to @SnapSam or others – automatically setting up rows for all of the fields associated with tiddlers under the tag-category in question (or whatever other filter-condition you want)…

Put this in a tiddler tagged $:/tags/ViewTemplate

<$list filter="[tag<currentTiddler>limit[1]]" variable="">

<$macrocall $name=table-dynamic filter="[tag<currentTiddler>]" fields="""[tag<currentTiddler>fields[]] -modified -modifier -creator -created -text -[<currentTiddler>get[remove-fields]enlist-input[]]""" caption="''Tiddlers tagged @@{{!!title}}@@, and their fields''" />

</$list>

You can add a field called remove-fields to take out any fields you don’t want to see (specific to the tag whose contents you’re looking at). And of course, edit the above if you do want to see things like text, modifier, etc., in the dynamic table.

-Springer