If you want the text in the the top of the hex, try setting the alignment to "above center", and make sure cursor snap is on when placing the text. There should be a snap point along the top edge of the hex, so with above center, the text should should appear centered near the top line of the the hex. (If you place it on that snap point obviously)

Note that you won't be able to adjust the actual distance, that is based on the text size, but it should center neatly in the top at least.

1/2. No. It only lists bitmap fills in use by entities. But, keep in mind that the fill property is defined on all entities, whether they use it for anything or not, as fill is one of the basic entity properties. So for example, a symbol reference do actually have a fill defined, even though it will never use it for anything. But my command can't know that, so it will include the fill in the list it uses to determine which add-ons are in use.

3. Use the IRD command. It will list the actual file names of everything. You may still need to to some searching because it can't pinpoint the entity in the map, but knowing which file is being referenced usually helps you work it out.

A good way to notice things like that is if you look at the command line while executing the macro. A macro that successfully and completely executes should return to the Command [LASTCOMMANDNAME]: prompt.

In your case, you could see that it was instead asking for a filter, with a word prefilled.

It is missing a newline (enter) at the end of the last command there.

Generally, opening the folder of png files instead of the FSC is not that a good idea. All the settings for the symbols are in the symbol catalog file. The folder only contains the raw images. This means that the symbols won't automatically go to the right sheet, settings like collections and random transformations won't be used, smart features won't be available, and the origin point may be different than the symbol. Not all of this is equally important for every symbol, but generally, opening the folder should really only be considered for cases where there are no symbol catalog available.