Red, you're missing three very important points.
1. The spells allow you to raise your fort levels much higher then what would be possible given current LT levels.
2. As long as your magic up these forts where you have a core you'll be able to protect your investment with a spell shield.
3. Any attempts to lower fortifications though the spell shield will cost 20 PP- meaning that it will always cost more to lower the fort level (regardless of the fort level) then it will to raise it.
1. The spells allow you to raise your fort levels much higher then what would be possible given current LT levels.
2. As long as your magic up these forts where you have a core you'll be able to protect your investment with a spell shield.
3. Any attempts to lower fortifications though the spell shield will cost 20 PP- meaning that it will always cost more to lower the fort level (regardless of the fort level) then it will to raise it.