Rather than having "harsh" filters for planets (what we currently have, could we have toggle filters?

For example, if I clicked "flagged" and "your planets", it'd only show planets that I own which have been flagged.

I'm not quite sure what you're getting at here...

So you're saying that right now, ANY planets that have been flagged by ANYONE is showing up on your tab? And you want the option to block them out so you only see your flagged planets (using the flag tab as an example) ?

Click the Flag filter, type "you" or "enemy" or "unocc" plus you can still type-filter by resource. Then you still have your sort options.

now add recently scanned to the mix and u have a party...

While there are always ways to get around those things, to some extend, I don't really see why not... it shouldn't be a lot of extra coding~