kralux
If the bloodline purification seal is done, then he can't spy on the Uzumaki clan because he will immediately be found out, unlucky in Naruto Uzumaki can be said to have the most kekegenkai, on average one clan only has one, and I suggest what happens if the Uzumaki use the seal technique they are like Onmyōdō because the concept of Onmyōdō power can be said to be the same as the use of seals, considering that the Uzumaki clan is very good at that.
Bro this is a big fumble I can’t lie. You can make tsunade get over her past traumas and move on, she doesn’t need to be single and jariya is the perfect person for that. I mean bro loved her before even Dan came in the picture and he still always there for and would sacrifice his life for her. If jaroya and tsunade where to get married than that child could carry the senju name and officiallly become a senju. But you ruin that good plot device. Now senju clan will forever be nithing but dust just like the original timeline. At least uzumaki had people to carry their name man.