Allow smart guides to highlight the outline of an object or path snapped to
Often when there are multiple objects in very close proximity to one another, determining which of those objects the active object is aligning to can be uncertain, especially when those close-proximity objects are small or their paths are very close.
And when you are trying to align an object to another using smart guides as the reference, one might be aligning to the wrong object.
That is why it is important to know exactly which object is being aligned to... Currently the pink line 'touches' at its endpoint, the object it's aligning to. This can be confusing when there are many objects that have paths that are very nearby.
My suggestion to improve smart guides is to 'highlight' the outline of the object you're aligning to, rather than just a pink line that touches the object.
I've included a short video of the current behavior as a reference, and in a screenshot, a suggested solution showing the object being aligned to as outlined in pink.
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I remember asking a similar thing for grids — to see where a snapping happens: https://illustrator.uservoice.com/forums/333657/suggestions/46659439
Now, with that’s done, I think this one would become an option too.