The SHS cards are really something man
It's hilarious when the starters are also the combo pieces, and when all the combo pieces are all starters. It's also funny that it has no garnets and about 1 real brick.
Oh and a free pendulum scale which allows you to summon other cards like the PUNKs, speaking of..
The PUNK engine is so ridiculously flexible.
You can play it as a backup, or pendulum summon them with the new SHS cards. All while plusing to infinitum with a Ghost ogre and a boss monster that bounce cards and also summon your other PUNKs in the GY for the next turn.
What the PUNKs do to this deck is allow it to have a grind game which the SHS lack since that archetype is almost pure gas.
Since you only need 1 card to start the whole SHS combo (Bike, Soulpiercer, Prodigy), you can sometimes draw those cards while activating Session which I find Funny.
Oh and you have access to Psychic End Punisher.
Bystials
They're are played since it allows for easy level 10 synchros and because Dis Pater Can summon Omega in the Banish zone so you can handloop twice which is funny and extra if anything.
Hmmmm...
I guess the downsides are is that your sideboarding is pretty limited, and you don't really have a good out to FLOODGATES except Eccentrick.
The FTK version of SHS is good but I think this one is just a lot more safe and flexible since the 2 archetypes can function well seperately. But If they're together then your boards are almost unbeatable.