@Background Pony #6FC9
I see her having that kindness. She is like a sage in the making. And she just wants to help everypony if possible. She even believes Sprout can change.
And that’s why Sunny is Twilight Sparkle’s successor, the upcoming alicorn for the ponykind. She didn’t have much personality development in contrast to the others - we’ll probably see more of that in later episodes; but when her naivety and shyness are replaced by insight and self-confidence, undoubtedly as a result of experience, she will be on the right path.
She has humility, honesty, kindness, faith in others, a willingness to inspire and help others, growing leadership skills where she wants to help rather than have power - the fact that she doesn’t want alicorn powers just to be an alicorn makes her the most powerful pony in the G5. In many ways she is the opposite of Opaline who craves recognition, power and fear as the most powerful that no one should dare to contradict. Sunny will be kind where Opaline will be merciless in the face of their enemies and annoyances.
Also, Sunny has an advantage of having very strong conviction and perseverance in the face of impossible odds, and this could be what makes her the future element of Hope in the end. For she is on the right track as an alicorn, who derive their strength from protecting, helping and inspiring others for whom they only wish to be of assistance, for harmony - for tolerance - for friendship.
Sunny gets stronger with time and one day she will ascend to meet Twilight and become a complete alicorn, that will probably be when everyone else thinks she was dead and mourns her. But when she returns as an alicorn after making her choice to be a princess or not, and when she knows what her destiny is meant to be, she will inspire hope in all ponies and non-ponies.
The rainbow stripe in her mane and when the earth pony magic was forced out of the mystical dimension through her actions, means that she is meant for much greater missions in her life. Because not only does she have to restore Equestria, bring harmony and friendship to all, give hope to all, she needs to give the whole world a new mission - she is the beginning of a new glory, as Twilight envisioned when she predicted the Mane 5 many centuries before.
Sunny is more than a pony. Even more than an alicorn. But her biggest and most dangerous mission is to defeat The Big Bad, who is probably not Opaline, but the enemy behind Equestria’s collapse and the dark times in Equus. Which can represent evil, hopelessness and despair. And luckily there are many years until this will happen, as this is probably set for the end of the G5.
Until then; Sunny’s will grows in her path towards her destiny.