Leona mini rework idea.
Context: Just got out of a great Tank Top Leona game and started looking at champions in LoL, I noticed that most tank champions are restricted to a single role due to huge issues, for example Tank Top Leona suffers from not having a passive, poor CS ability and mana issues, which further contribute to her poor CS ability. I think looking at Leona as a tank rather than a support is a really good idea, especially with how fun she is and how not fun being gold/exp starved as a support is. At any rate I started thinking and came up with a great rework idea.
Passive: Solar Powered When Leona is in range of allied turrets or wards she becomes Solar Powered and her auto attacks deal 10/40/70/100 magic damage (upgrades at 6, 11, and 16) additionally Leona restores 3/6/9/12 mana per second. (This passive would help her not get bullied in top lane, as well as adding to her CS ability. Fixing all her major issues in one change, leaving just normal weaknesses)
E: Mana cost increased to 80 from 60.
R: Mana cost increased to 120/130/140 from 100 at all levels