Filter with variable permalink

Hi Jeff @foomagoo and thanks for your excellent plugin!

I use the plugin IdeaStream to post ideas and it works sidewide and with Buddypress groups.
The “add-new” form actually conflicts with another plugin and I created a filter in Plugin Organizer to block the conflicting plugin at that page.

The filter works with the sidewide permalink because it is standard: mysite.com/ideas/action/add

The problem is with the groups, where the permalink is like this: mysite.com/groups/*/ideas/action/add

The part /*/ is variable, because it is the group slug, which means I cannot create a filter to apply to all groups.

I see that filters work for permalinks with a variable part at the end (Affect children): mysite.com/groups/… but that doesn’t fit my needs in the present case. Are you planning to support permalinks with a variable part in the middle ?

Thanks in advance
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PS I tried to block the conflicting plugin using the available post types: ideas, ideastream_utility but they don’t work.