So, after playing Ogres for solid 60 turns, I came to the conclusion that they need a lot of work. Long post warning, TLDR at the end.
First, their biggest (and most fixable) problem - camps.
I've said it before and I will say it again, they were designed around RoC and turtling in 20 - ish settlements. That works for RoC where you don't really need to expand, but it scales horribly in IE.
You can get 7 camps in total (8 if you play Greasus) for the entire map. That's about 1 camp for 70 settlements. Even Chaos gets more Dark Fortresses than this... They are your only way to get good units and they generate a lot of money.
Uncap the camps and make it so you can only put one camp in a province. Every 2 or 3 provinces you get a new camp capacity.
Make the camps movable. Simply put a gold cost to it and make it so you can move camps around. Gold cost could scale with camp development, so you are disincentified to move them willy-nilly.
Second, and this one is less of an issue, but still is.
They are broke, like absolutely. Their settlements don't earn much, their camps do, but we have already established that 7 camps for 500 settlements isn't enough. Their camps are extremely expensive, upgrading advanced recruitment building is costly as hell and you have to manually recruit camp garrison... Why? Herdstones get super strong garrison for free. Yea, you get 60% upkeep reduction, but you still have to recruit those units...
And yes, they are supposed to make money by sacking, but so do the greenskins and they get a money building that makes 500 gold at tier 3, contrary to Ogre one that makes 150 gold at tier 3 LMAO.
Make camps building cheaper. Buff the money making building to at least 300 gold at tier 3...
Pathfinding. So many minor settlements and Ogres suffer the most. The pathfinding for large units is horrendous and Ogres's entire roster is filled with large units...
There isn't an easy one, so I guess fighting less settlement battles would help?
The race is pretty cool design-wise, but man, currently they are much worse Greenskins.
TLDR: Camps are very limited and super expensive. Ogres are broke and have huge issues with pathfinding in minor settlements.