First time playing M&B and I have to say I'm addicted

There's a lot that bothers me...clanky combat, terrible looking NPCs, bugged quests etc. but I'm sure all that will be taken care of either by the dev or mods (there are already some neat ones out there!). In spite of all the issues, I can't stop playing
Now, on to my observation of this issue:
My first save was about 50h and I had the same issue with Southern Empire taking over most of the map, however, an interesting thing happened. They did not conquer the complete map, but left the other nations/empires down to 1-2 cities with military strength between 100-300. Needless to say, those empires were useless and could not recover.
I was able to finish the quest and formed my own Empire (after lots of trial and error due to bugs and wars lol), taking 2 towns and 2 castles with me in the process. I was immediately in war with Southern Empire.
Sadly, I looked for an option to try and get the other empires on my side, to form an alliance, to try something to help them out so we can take the Southern Empire down, but nothing was available.
I was able to persuade a few lords to join me so I had a pretty decent army before I faced the might of Southern Empire lol but it did not help.
After several battles it was clear I wasn't going to last long so I enabled cheats to see how far I can push them!
I ended up with well over 30 lords in my prisons, but there was nothing that I could do with them. Option to execute them was grayed out...I tried talking to them to persuade them to join me, but that was not available either...so they just sat there, some escaped too.
Still, Southern Empire would come with more and more lords and armies, it was pretty hard to keep up with them attacking from each side, even with cheats! My castles and towns were falling before I could move my army around and they were practically next to each other!
There needs to be a way to deal with most of these lords...execution, banishment (idk overseas lol) or ability to persuade them to join you when they're your prisoner. By my count I've encountered around 50 lords in that war (some could be repeat)!
Sieges need to last a lot longer. My two castles were pretty close to each other and all I did for a few hours was run between them and fight people off, recruiting in between and from my prisoners and they would still fall frequently!
Alliances, pacts, mercenary troops (as in hire mercenaries/gangs not individual troops, to wage war against your enemies, like lords do),
pay bandits to join you or harass your enemy.
Maybe I missed some feature that could have potentially got me out of that situation...but on to the new save!
