Ability to save LINQ expressions in filter window

It would be great if we could save the common LINQ expressions to the filter window (I am still not sure where to access filter in TE3). This will save time . It would be even better if there was a GUI interface to create advanced filters with options. e.g. Select Object type, then depending on the object type which attribute, add boolen (and/or) etc for more filter conditions etc.

Currently I open both TE2 &3 and use TE2 for filtering. I use expressions saved in notepad and copy/paste.

Thanks.