Okay, thanks! And yeah, I was in training practicing my waveshines on a Falcon and would just juggle with wveshines, so I thought I'd ask if this was legit or not. Dair shines are more optimal, I agree, but shine juggle could just be used as a mixup or an easy way to rack up about an easy 24% if you fail to hit the Dair. Just my thoughts though hahah.
If you already know this and I'm a broken record my bad but the basic Falco pillar on fast fallers (starting at 0%) is either
A) dair->shine->dair->shine or
B) shine->dair->shine->dair->shine
This works so well because the only way to escape is great smash di or platforms. The shine sends them into tumble hit stun (orange in debug mode) which means they can tech, but the dair at low percent causes non-tumble hitstun (yellow in debug mode). The dair makes it so they can't tech. Also, if you waveland down after the shine you can almost always run after them on reaction and connect a dair.
After the basic pillar the dair causes tumble hitstun and gives them a chance to tech, so now you gotta get creative. Although I think the simplest and most efficient thing to do is just u-tilt->fsmash (even just fsmash after the last shine isn't bad), It probably won't kill, but it will get them off stage and it's a lot less technical then say:
Last shine of pillar->first hit uair (no tumble hitstun)->shine->soft neutral air->hope they miss the tech->laser reset->fsmash
Or the fancy one we see westballz do:
Last shine of pillar->soft reverse auto cancel bair->pivot u-tilt->fsmash
Fun part of Falco is how creative you can get with the pillar, but I think your first two sets of shines and dairs are too optimal not to use.