If I have a filter 'Position of Selected Exactly 3' for reviewing LoJack and want to switch to hijack it would be really cool to have the ability to just change the number 3 into 2 in the statement. Kinda like when modifying colors, being able to write and modify statements manually instead of clicking all over again.
Another thing would be the range selection shortcuts. For example if I hold CTRL while clicking on A2s it selects A2s-AKs etc.