Anything else then besides entry hazards?
Bulky offense is looking to be the type of team with the least flaws this generation, but a good stall team using passive damage is still perfectly possible.
The Mega-evolutions are the main thing saving the Hyper offense from death, at least, from my speculated knowledge.
Toxic posioning is probably the best thing you're going to run into when it comes to indirect damage.
Also, while Defog helps extremely, entry hazards are still going to be used on a stall team. They will choose pokemon that can continuously set up these entry hazards, even if they get defoged. It's not immpossible, but with how powerful stealth rocks, spikes, toxic spikes, and the new sticky web are, we needed something to limit or reduce entry hazard use.
Really, I think you'd be fine using indirect damage entirely. But the pokemon you can use will be more limited then if you choose something like bulky offense or balanced.
you're gonna need Bulky pokemon with a good number of support options. (blissey, ferrothorn, etc.)
A magic bouncer or rapid spinner would help a lot, since entry hazards will help hyper offensive take you down before you can wither them down.
Err sorry my messege is so broken up.