Dynamic Collection Title Switching

Hi all -

Many thanks for reading and any suggestions or feedback you have to offer!

I'm working (or maybe struggling) to set up a plugin to switch between collection titles dynamically. I've written a bit of code, but can't seem to take it to the next level; i.e. functionality :). If anyone has any suggestions on how to best proceed with the various hooks, filters, and functions I would be most grateful!

add_plugin_hook(link_to_home_page', 'collection_filter_link_to_home_page');

function collection_filter_link_to_home_page()
{
	$collection = get_collection_by_id($_GET['id']))
	switch ($collection) {
		case 1:
			$collection_title = 'Early Images of Egypt';
			break;
		case 2:
			$collection_title = 'Copeland Railroadiana Collection';
			break;
		default:
			$collection_title = 'BDS Omeka Instance';
			break;
	} return '$collection_title';
}

This is only the most recent iteration of my plugin trial, so there are probably some things that are obviously incorrect.

- I know that 'link_to_home_page' isn't in the Hooks or Filters list, however the example Hooks and Filters I've tried haven't worked either.

- I'd like to have the output appear in the
<div id="site-title>, thus the use of the 'link_to_home_page' function. If that method is completely incorrect, can anyone offer a different suggestion?

- The use of switch() may not be ideal. Is if-elseif-else() is more appropriate?

Thanks again for reading and your suggestions.
Cheers!

I've responded to this question on the dev list.

Others who are interested can read the thread at the dev list.