Did they do anything with the late game or is it still grinding through hundreds of sieges?
The recent rework of charm made conquest trivially easy, should you choose to use it. You get infinite-influence and nearly 100% chance to recruit clans. Just recruit 20 clans and AFK through sieges. You can easily add 15-20 fiefs per game year, all while touching the keyboard only a few times of hours (to start the next siege).
1.8 is a big step forward in optimization, but in terms of gameplay it's a huge step backwards.
1. Seiges are worse than before, with multiple bugs (troops not defending, troops not using ladders/towers, troops won't go through gate after ram breaks it, trying to lift up siege ladder as player perma-locks you into animation, troops will push player off wall if you try and shoot from the edge).
2. Rebel clans are bugged, and sometimes become invincible (unattackable by player faction, even when hostile)
3. Economy is bugged and non-functional. "dynamic" shops means that the theoretical most profitable shop in a town is created 3x in many towns on day 1 (shops in epicrotea are three woodworkers, shops in askar are 3 breweries, etc.) This means that passive economy/trade is mostly non-functional the first 5-6 years of the campaign until shops start rerolling.
4. The new respawn system is worse than the previous ones. Field battles are mostly unplayable. Units start at random spots on the edge of the map and attempt to work their way to the main fight. The problem is that many of the new fight scenes have bugged pathing, so they just wander in circles (sometimes even while in shieldwall formation) and rarely join the fight. Very high cavalry % in every army means that fights aren't medieval battles. Bannerlord battles are currently a reskin of "Hello Kitty Bumper Car Adventures" in horse-themed bumper cars. Aserai defensive AI is bugged and will occupy high ground, stand still, and die (often while not even using projectile weapons to fight back). I did a campaign against the aserai and killed around 2,000 troops while only taking 20 total losses (mostly in the fight i autoresolved). I was even using forest bandits as arches to save on pay.
5. Armor rebalance makes Vlandian units exceptionally weak (Crossbows and sarges). Fians and Khans are still cartoonishly overpowered.
6. Politics are bugged, and clans will randomly desert for new factions.
7. Levelling system is much faster than before (except for medic), which is mostly good for the play experience.
I understand that development is a '2 steps forward, 1 step back' process, and that 1.8 probably represents progress in the back-end, with great optimization and systems that may work (if balanced and fixed). In terms of the play experience, it's got a lot of problems and I'd recommend waiting for the next big update to come back to bannerlord. 1.8 seems like a patch focused on getting technical systems in place and ready to be tested, without much work on the gameplay side of design.