171 Votes in Poll
personal opinion goes to kimetsu no yaiba, it's the most promising.
Totally not biased cuz Ufotable
Carole(?) and Tuesday or Isekai Quartet.
Philosopher's son n We never learn
Isekai Quartet and Demon Slayer
HUNTER X HUNTER
But hxh isn’t in the spring 2019 anime lineup
What do you think?