Since the new summoners rift mainly is about added clarity to the game, I feel that there also should be an update to the visual size of the fountain platform.
This will allow player (specifically new ones) to easily see where they can or can not stand in order to recieve the fountains healing.
What I am writing about can also be shown in the added picture attachment.
I think that some kind of visual cue, such as a glowing green (like the 
summoner spell) and blue effect (like the 
summoner spell) on champions on the Summoner platform to show health and mana regeneration would make it easier to see when you are receiving these effects. In addition to this, I think that recalling should fully replenish health immediately once on the Summoner platform, if this does not affect competitive gameplay too much. Alternatively, the health and mana regeneration should be quicker.
I think little + signs (Green + Blue) should be hovering up not really high to where its annoying, but just to show that you can regen there.
