U could simply close postern or make doors smaller again and it will have the same effect.
Oh wait no, now the funnel is also upwards which makes it even harder.
Easy def.; ppl with similar skill and gear on both sides u probably can defend twice the number of attackers.
The only constant on the fort changes from the beginning are measures which either favor funnels heavily or making them impossible.

For forts these days, mainly ppl are defending. Either you get stomped and put out of your misery fast or you can farm your enemy for 30-45min.
But being funneled for half an hour no thank you, Sir

Exactly this is the reason why oRvR gets in a stalemate on end zones more often lately:
- Attackers don't wanna siege to probably get funnel on fort zone.
- Defenders dont rly wanna push back the zone cuz they want to funnel the enemy on forts.
This rly hurts the oRvR and it's not a player mentality problem it's more the lack of alternatives.