How about a concept for Rose Tyler aka Bad Wolf where rather than being that the Bad Wolf causing Rose Tyler to not age(eternally youthfullness) or have a extremely slow aging immortal/near immortal. It causes Rose Tyler to be a sort of interesting hybrid being between a immortal and a mortal. Where Rose Tyler has a infinite number of regenerations just with on difference those regenerations have human rate of aging with human lifespans rather than Time Lord rate of aging and Time Lord lifespans for regenerations or even near ascended alteran/ancient(stargate sg1) rate of aging and lifespan. So that Rose Tyler can travel with the Doctor for all eternity long after the Metcrisis Doctor is long dead from extreme old age and yet while visiting the various alternative time periods of extraterrestrial/exteradimensional and earth based human history. And yet not necessarily cause any confusion/jealousy/suspicion among those who they visit since she would be able to visit with a ever older looking appearance/body/face from her original appearance/body/face and and then regenerate with a entirely new appearance/body/face and the process starts all over again and yet still be able to gather and retain newer and newer memories of each and every experience as she regenerates over and over again. And the Metacrisis Doctor could try to figure out how to tweak his own DNA/TNA in order to have the same ability as Rose Tyler. That is the sort of ability that could actually theoretically derive from a mixture of based/primary human DNA with following/secondary Time Lord and TARDIS TNA. Wouldn't that actually create a more interesting possible alternate Doctor Who Storyline. Longevity Lifestyle science would only be used to lengthen the lifespan of single a human lifespan long regeneration of this new type of regeneration process. Which has many advantages when living among humans and time traveling through out the various alternative time lines of alternative human/earth history. The same could be Done for Donna Noble and Clara Oswald. I had made this suggestion because despite the thoughts of those who want to find the cure for the aging process through genetics in fact removing the aging process/biological aspect of the Second law of Thermodynamics(otherwords biological degeneration) from the human DNA is just removing one of the core attributes of what makes a human a human being besides the emotional aspect. Since for human beings the aging process is directly linked to the human growth of knowledge and wisdom through time and experience. Because even if from passage of time the outer appearance beauty may decay/wane the aging aspect may help the inner beauty to actually grow due the growth of knowledge and wisdom through time and experience. This process could be a infinite number of life time opportunities to gradually become like a finely aged wine or a finely aged version of another type of alcoholic beverage as what those who drink alcoholic beverages would describe the human aging process. This what I actually view that near immortal species who age slowly may almost miss or basically completely not aging fully immortal(eternally youthful) species could miss out on.

"Do you always get younger with your regenerations?"

(looks at Twelve) ... Yeah, about that.

This was an emotionally roller coaster but worth it. Once I started reading I couldn’t stop

I was not ready for this!

Loved it!

*sobbing* this fic is so good! my emotions are just short from it! read the whole thing as fast as I could because I was just so sucked into the story! the family dynamics are fantastic! just fantastic! loooove it!

oh, yeah this started out a bit painful with the aging thing but then the doctor! oh myGod! I keep crying!

this chapter just had me bursting into happy tears! Amy's faith that the doctor would return just made me so Happy! I cant believe- just emotions! omg!

This story was absolutely fantastic. Molto bene. One of the very best fanfics I have ever read. Thanks for sharing it.

Again with the crying...must be a new record for me. I am truly enjoying reading every word of this.

Jesus Christ...it’s not uncommon for me to shed a few tears while reading fanfics. There are some out there that have really gotten me choked up in the past. But this one? By the stars, you had me actually crying. Streams of tears, catching breath, stuffy nose- the works. Congratulations, this is a fantastic piece of literature. I look forward to reading the rest of this fic that is just as wibbly-wobbly timey-wimey as the actual show.

What a unique story idea! Love the different twist on so many familiar things. Enjoyed original characters too.

This was very well planned out and a fun read.

Oh my gosh everything about this is amazing. I cant even put it into words but i couldnt stop reading it this was such a good doctor who binge. I love how instead of the universe blowing up it was rose's arrival via bad wolf that caused the cracks and it stull wouldve accounted for amelia's crack, the crack in the forest of electrocal trees, and the crack that eventually has the ability to let the time lords back. That makes the silence still possible. Like amazing. I cried during certain parts. Thank you so much for writing this and not abandoning it.

Ok I'm done. You made Rory a Gary Stu and it's just too stupid.