Suggestion
I would suggest that if the tile is not infused to your alignment then you should only see: "This location is infused and aligned to the forces of Evil".
If we really must have indicators of depth I think they should be more nebulous and wooly with the deepening descriptions reflecting greater depth and broken up by thresholds of 100 such as:
1-100 - "This location is infused and aligned to the forces of Evil - the high noon sun seems dimmed and the birds no longer sing"
101-200 - "This location is infused and aligned to the forces of Evil - corrupted flora has begun to sprout from the ground"
201-300 - "This location is infused and aligned to the forces of Evil - evil contraptions and machinery can be seen about the area"
301-400 - "This location is infused and aligned to the forces of Evil - the screams of the tormented can be heard all around you"
401-500 - "This location is infused and aligned to the forces of Evil - the forces of Stygia rule over all in this damned place"
Holding the skill Psychic Bloodhound could let you know the rough depth of opposing infusion to the nearest 50 points.
Maybe reducing between the thresholds could result in a little bonus 5xp and 10xp for an alignment flip.
Rationale
- Thematically knowing your sides infusion depth makes sense but knowing the depth outside your alignment should be clouded in a degree of mystery
- Not knowing how deep a tile is makes it more interesting when engaging in territory dispute