One thing I would like to see from the Vanguard update...

...is a new Passive for Leona.

Leona is the only support in the game classified as a Vanguard (Taric, Braum and TK are Wardens, and Thresh is.....well.....Thresh), and there is only one reason, and one reason alone why Leona is only ever played as a support, that being her passive.

If you don't know, this is Leona's current passive:

Sunlight Leona's abilities each mark enemies hit with Sunlight for 3.5 seconds. Any damage dealt by ally champions will consume Sunlight, dealing 20 - 105 (based on level) bonus magic damage.

Notice it only says ally champions. Leona, unfortunately, doesn't have the capability to proc her own passive. If she could proc it, more than likely, you would see people playing Leona not only in the support role, but also in the top lane and jungle.

I for one have always wanted to see a Jungle Leona, but it is so hard to pull off simply because of this one fact (and probably due to how little damage she really does). Thing is, if you do allow Leona to proc her own passive, it only becomes a better version of Lux's passive, and I don't think we really want that.

So, in order to not just copy and improve Lux's passive, she would need something new all together. Something where current support Leona mains can still make great use of her in the bot lane, but also give people the opportunity to try her out else where. Maybe something like this?

Sunlight Leona radiates with so much sunlight, that she blinds her enemies. Whenever Leona gets within 50 units of an enemy unit, and is visible to them, she blinds them for 0.5 seconds. This effect can not happen again on the same unit until Leona is out of range, and stays out of range for 5 seconds.

Now, this is just an idea, and one I literally just thought of while typing this, so it could very well be a bad idea. But, I feel it does work quite well with her Vanguard style of play of diving in and causing chaos. It only lasts long enough to only dodge a single auto attack, but one auto could mean the difference between life and death. Also, you don't have to worry about being blinded by Leona after being stunned by her, since her stun lasts 1 second. You already can't do anything while stunned, so not being able to auto attack her afterwards would feel really bad.

Of course, removing the damage from her passive means we would need to compensate for it elsewhere in her kit. This is good for her, though, for in order to truly succeed outside of bot lane, she would need a little extra damage to either trade, or take monsters in the jungle.

Anyway, just my 2 cents on it. Even if Leona doesn't receive any changes, I'm still pretty excited to see what changes come out.