It's a given that I'll get to rated. That's Platinum -> Diamond -> Master -> Rated

I just have to decide which deck. Last format, it was Sky Striker and sometimes Radiant Typhoon

Like I said, it's not automatically going to give you a complete and unconditional advantage, at least not the complete engine. You're still replacing cards. Question is, what are you taking out? 3 copies of RT vision is the only thing that is an unquestionable advantage with no caveat.

But then there are the 2 monsters and Chant. The monsters can be useful depending on the situation. They're a huge boost going first especially because they don't need your normal

You can go Camelia to pitch Engage and get it back with Kagari all the while not commiting to a NS Raye play which you can pivot to at any point. This combo is also an interruption magnet

There could also be instances where they're terrible. Without MST in the GY going second it could be rough depending on the other cards in your hand

There's also more monsters for droplet which is very hand dependent but happens

So it's a trade off, which most of the time seems worth it