Creating tumblr bot - Have some questions

2 years a go I used to make some money with nsfw tumblr blogs but it took to much time to create, set up etc even with imacros so i let it go.
Now i'we learned to make bots, so i 'm working on a bot to make all the task, ( set -> forget -> bank money ). All i know that a lot of things has changed on tumblr and that i still get some traffic from my old blogs and still making money.
Now i would like to ask the community for some help ( info )

1. How important is that the username to be in the same niche with the content ?
2. What matters more when someone search something tumblr username or photo tag ?
3. 2 years a go to warm up an account and have some exposure i had to like, reblog and follow somethings to get visibility, but now? How many of this i will have to do ?
4. Any other advice ?

PS: the bot will create account, set up the account settings, connect to ifttt, set up ifttt settings and that's all i will never log in on the account.

Thanks!

trillions of things changed in last 2 years. first of all, if you grabbed any usernames: forget it. tumblr closing accounts extremly fast.
secondly: they removed ask function and add message, which is on dashboard

Lol dont bother. I spent 2-3 months rewriting all my bots. Finally when all running smooth create 50 accounts using all unique shit as per my setup but all get banned within a couple weeks.

Tumblr sucks in terms of instabans. Almost but not quite as bad as instagram ban rates. Nothing beats insta for fast bans. Though it is maybe a tie between pinterest and tumblr for second place.

Why are you guys wasting time with creating a new bots, when there's a cheap and really powerfull bot on the market? It's like reinventing the wheel, don't you think?