Mobile Suit Gundam 00, Guilty Crown Recommendations
If you like Gundam 00 even Code Geass, try Guilty Crown as well even if you're also big in to Sci Fi and Mechas as well. Other than just mechas, supernatural powers are also involved including drama, interactions, romance, twists, and revelations that will shock the whole story to another level which you'll never forget for your entire life.
They both consist of the genres Action and Mecha. They are also both similar in political wars or outbreaks and have some form of terrorist act against political reviews and acts.