I think a lemmy client close to reddit UI but with extra cool advance feature would be a great way to attracts people like me

But out of the box it should be like reddit

I do not mean offense by this but anyone that wants to participate on the fediverse because it offers an app that clones Reddit is generally a person that the fediverse doesn't want on the platform. The community is generally looking for people that want to use the Fediverse for the community, lack of exploitation, bots and karma farmers that Reddit excels at providing.

Maybe you should just keep using Reddit if that's the experience you're looking for.