Event Calendar - filter by type of event

Hello,

It'd be nice to be able to select the format type instead of the region as second filter instead of State.
I mean, except in the US and Canada, states / regions are travellable to get to a "big" event.

I would suggest having three filters always on display:
- Country
- State (updated when Country is updated)
- Format

Up.
I sort of need an easy way to find "Continental Qualifiers" without checking every event one at a time.

Can we at least add a "Format" filter in the event calendar (similar to the current "Country" filter)?