TL;DR: Lots of character analaysis and stuff.
Ran/played in a sm4sh tournament yesterday, I have to say, R.O.B feels less amazing than I initially thought.
-He has the same major weaknesses (immobility in the air) and its even harder to get down due to the lack of gyro cancelling, He's still got next to no tools for getting off the edge and due to the new ledge mechanics he cant stall at the edge with a cautionary laser/gyro without putting himself at risk either, which is another inherent problem.
-Also, Uair is far weaker than I gave it credit for initally, hitting mario off the top platform of battlefield, it doesnt kill untill 125% without vectoring and thats with all the hits, as the final hits knockback is actually marginally weaker if you don't connect with all the hits (i've tested this extensively and even altered the % as necessary)
-AND the dthrow>Uair isn't guaranteed at kill percent, they go juuust far enough in order to be able to air dodge out. obviously this sets up for a 50-50 mixup still, but i'd rather have the 100% guaranteed kill combo.
-Not to mention, his grab range is AWFUL for some reason, it's ganon levels of short. He's still decent, just not as great as I originally thought.
When it comes to stage choices, I say we want to go to battlefield as our main stage, as most of our kills will be coming from uair/usmash, which works best when you have a platform to fire **** through. Yoshis Island works too as (despite having a higher platform) our Usmash still hits through it.
We want to avoid any FD mode stages that have vertical walls below the ledge (E.G: warioware, boxing ring) as a lot of characters can drop things on us from the ledge, and we want to be able to recover to the ledge from below the stage.
Oh, and a couple of character specific things:
Dedede:
-Reflecting the gordo with side-b is WEIRD. sometimes it will reflect (and instant break dedede's shield or KO at like 70%...noice), but most of the time you'll hit it a few times with the armflail hits and then get hit by the gordo itself. It SEEMS as though the reflection only happens during the startup of our SideB (the little hop he does when you do a grounded version) so try to time it correctly.
-I'd suggest keeping gyro fully charged in neutral and firing it as a counter to him using the gordo, you can bounce it back at him with gyro before he can even act after doing the move.
-He's just as much of a victim in the air as we are now that his Dair isn't good for covering landing anymore, so get him up into the air as soon as you can.
Bowser Jr:
-We can reflect his down-b (THANK GOD) but only after it starts walking. He can side-b at you and kinda make life hard, due to its solid rushdown pressure. I'd suggest just avoiding dealing with it by rolling away of something similar. I really didnt get any good pointers on how to deal with this *******.
Jigglypufff:
Her fair/bair are godlike at edgeguarding, i'd suggest ALWAYS recovering low and using Uair to punish a jiggly trying to chase you down there, she just flat out beats our fair though.