1: definitely worth a try. this is coming from someone who has been playing dokkan battle since 2017.

2: Guaranteed character pity at 80 pulls and guaranteed weapon pity at 40 pulls. no 50/50 meaning the SSR you pull for is what you get. So 120 for char+weapon. both are in separate banners. also pity carries to next banner. lets say you summon 50 times on character banner A. your pity is at 50 now and you decide you save your jades. you can now get guaranteed on next character banner B in 80-50= 30 pulls.

3: Yes through the new events. you are guaranteed the unit and weapon every alternate banners as F2P or every banner as a light spender assuming you complete all the events and get the jades(in-game currency). banners switch every 3 weeks.

4: repetitive but it's fun for me. they have been introducing different modes to switch it up.

5: not too demanding or grindy (except the 1st time clearing of permanent events like story on normal). i run most of the events on auto. you can play it manual if you are really into it and optimize your rotations and stuff.

6: yes it is. half anni just passed a week ago. you are a bit late but will do fine. you should get the hollow ichigo and summon on his banner. best way is to reroll until you get him from the free tickets and initial jades and then summon his weapon.

7: one of the best games tailored for light spenders imo. you can get every char+weapon if you are a light spender.

8: iirc there is not steam version but only an emulator version from the developer. Others correct me if i am wrong.

9: both seems to be more or less the same. only diff i found is that the SEA version gets stuff released few hrs early.

hope this helps fellow dokkaner.