I use the encounter builder all the time, as a DM it's invaluable to me and one of the main reasons I use D&D Beyond. I would really like to see a filter in the encounter builder when searching for monsters that automatically filters out content I don't own. I've tried selecting what I own individually from the sources filter and checking the "remember my filters" box, but D&D Beyond never remembers my filters and it's such a chore to do that over and over. Thanks!

another thing to add on to here:

• When making homebrew items and monsters, everything should be on ONE PAGE. I have no idea why you have to navigate to a new page to edit movement speeds or other modifiers. I've lost so much work from editing attacks and abilities to then go to edit movement and have it all erased because I didn't click Save (which reloads the page), then click Movement (which goes to a new page) then click save again. This really shouldn't be that tedious. 

Quote from DrSchmeltzer >>

I use the encounter builder all the time, as a DM it's invaluable to me and one of the main reasons I use D&D Beyond. I would really like to see a filter in the encounter builder when searching for monsters that automatically filters out content I don't own. I've tried selecting what I own individually from the sources filter and checking the "remember my filters" box, but D&D Beyond never remembers my filters and it's such a chore to do that over and over. Thanks!

 THIS!! This has got to be one of the most requested features for the site, and the fact that it is not yet implemented after years is almost criminal.