I don't really see the point in running braid to leader on a baitcaster, unless maybe you were fishing gin clear water and visibility was a concern, which isn't an issue where I fish. It's personal preference though, I already don't like braid and in my experience leaders just complicate things to me without adding a noticeable benefit.
I pretty much only use braid on standard braid techniques, like frogs, some topwaters, punching, pitching heavy vegetation, and the occasional swimjig, and have never felt the need to use a leader, with the exception of the topwater to keep the trebles from fouling in the braid. I don't like how braid handles, the occasional, inevitable bait cast off, slack line sensitivity is terrible and I don't like how it floats, I don't want to mess with tying leaders and I actually like some stretch in my line.So it's a no for me.
All that said, that isn't a judgement on what other people use just my experience with it, if braid works for you and want to add a leader, go for it! A lot of people do it with great results.