I decided to do a complete design of the Next Gen ( I know im sorry XD )  
So lets have the Twipest family first, also added a sibling to the family  
So ill give a small description of them  
*NOTE: This gen was designed before Season 9 and I haven’t watched the final so this is completely headcanon
 
TEMPEST SHADOW
 
After her and the Storm Kings defeat, her and the minions moves to an unclaimed land and took residences. She was crowned their leader and she was fine with it for a few years. After being in control of the civilization, she pasted the crown to her best friend Grubber and decided head to Ponyville. She decided to revisit the first friend she made after her redemption Twilight Sparkle. Her and Twilight got the reunite and Tempest decided to live in the Castle with Twilight. After some time of spending time together, they started having feelings for one another. They kept their relationship very low for months until Twilight’s student Starlight found out and accidentally told the others. The were supportive and always made sure no pony would ruin it. Tempest prefers not to be called Twilights Queen and more of her Royal Guard, she has her own armour for the castle to protect Twilight.
 
TWILIGHT SPARKLE
 
After many years of protecting Equestria, little to no trouble would show up and she was able to relax and spend time with her family and friends. She does have to help Starlight become to new Head-Mare for her school as she does take her on more Princess responsibilities overtime. Twilight had alot of physical changes as the years passed like her long hair which is starting to slowly glow and her wings changes colour and becoming taller than her friends. After her relationship with Tempest became fully official she had a slight worry of being judged even though she was royalty. Now besides being the known as The Queen of Friendship she is also known as the first Lesbian Queen and she created a spell to help queer ponies make children if they so desired to. She tested it with her own partner Tempest to sure it worked and it defiantly did. She is now as well a mother of two Unicorn children.
 
MOONLIGHT GLARE
 
Moonlight is Twilight and Tempest’s eldest child and is suppose to be crowned the next Princess of Friendship. She isnt exactly thrilled to be princess as she feels like she wont be good enough for it, Luckily her friends “believe” in her and by believe in her then just hope she doesn’t use her magic against them again. Moonlight has a unique ability to use and control Dark magic and spells, she can use them but not for long before she develops a headache. She is known as “The Dark Princess” because of her using dark magic. She doesnt like using her magic spells sometimes unless she has to use brute force for situations like stopping an argument of self-defense.
 
NORTHERN STAR
 
Northern is Twilight and Tempest’s youngest child, he wasnt given a royal status or really anything in the castle. He feels like he has no purpose and contains a strong jealousy for his eldest sister for being given a status in the family while he was left with little to nothing. He has fairly strong magic as expected for a child of Twilight but he doesnt use his own magic really, he has a gem attached to his cloak that he uses to copy magic spells from others. He enchanted the gem himself to use for copying spells from other unicorns and other species. He fled the castle after he turned into an adult