Better Alignment Features (Lectora Inspire 17)

In addition to the anchoring suggestions I mentioned in the OP, for alignment tools, you should be able to align opposite edges to one another (right edge to left edge, vice versa, top to bottom, vice versa, etc.). For spacing between objects, you should be able to distribute objects so that: left or right (or top/bottom) edges are spaced equally, center-lines are distributed evenly, or the space between the objects is equal (I believe this is the way it works currently in Lectora).

The system already includes grids, guides, snapping to guides, and alignment tools. What specifically would you like to see improved or added?

I think what Zachary is referring to is Illustrator's ability to align to a 'key object' (as in attached screenshot).

Once you've selected your objects to be aligned, you can click one again to specify a key object (shown by a bold border). Then when you hit any of the align keys, the second object will be aligned in relation to the key.

This would be super handy in Lectora, as it's hard to tell which object will be moved to align to the other, or whether both will move and meet each other in the middle - can make it very difficult to center objects on a background element (like a carousel card) as often the object you want to align to will move as well!

Exactly this. Illustrator and Inkscape have great implementations of this kind of feature that Lectora could really benefit from as well.

I agree. I'm constantly creating everything in Illustrator because it is so much easier to align there. I also use the align to a key object in Illustrator extensively.