Hello,
How about just adding filter buttons to your current page so that users on your site aren’t directed to another page, instead the tags are displayed based on “Filter” type buttons they click while on that same page. Kinda like a filtered portfolio type set up.
Example
Filter buttons at the top of your tag cloud(i.e A-F, G-L,M-S, etc), when user clicks say “A-F”, then all the tags that are within that range are shown, while the rest are hidden. But you’d still be on the same page. Then have a “All” button so they could get back to the default view of all them being shown.
Just a bbpress user here, just had a idea for you on that so thought I’d mention it.