I'm a newbie but I'm going to put an answer in writing so that I can see if the folks who are experienced agree with me, prior to seeing what they have to say... intended to be constructive criticism of the tree, so more calling out the potential faults I see.
Tree 1: I don't love it, the crossing roots in lower right are not ideal. The graft looks problematic in terms of the mismatch between the bark. I don't believe white pines will match that with age, either. There is some movement in the trunk though.
Tree 2: May have some interest. Remove the root that's highest on the trunk and spread the root system when repotting to help further develop the nebari. I suspect folks may say to remove the roots though, the left because of its odd angle and the bottom center because of its girth. There may be something interesting under the surface of the soil looking at the diameter of the trunk as it enters the soil (it looks like it might flare?). If I'm wrong about the flare, the trunk doesn't seem to have much taper, but perhaps you could wrap the lower trunk with wire and let the tree grow around it?
Curious to see how close I get...