What do you mean by 'the new ability to war and have allies and trade' ?
The old warmonger ways made it hard to war and be liked, even with your ‘friends’
With the new grievance system and pillaging benefits it seems a much more enjoyable game to ‘dabble’ at war.
For example, just playing a game as Poland, the terrain I have suits seaside resorts so I thought that would be nice. I had Gorgo on my right and Gilga on my left.
I early suze Kumasi next to a Gorgo as she declared war on it and I rushed to defensive tactics. I then declared a protectorate war against Gorgo (nice inspiration) and took one of her cities and pillaged half her lands. The city I took had her only theater and so she only managed to move 1 writing out. I then took another city and made peace for the second city back in return I got the second writing and some gold... I no longer have a -18 as I gave a city back, have removed her writings, have penned her in and as it was only 100 grievances these were gone in 5 turns and we are now friends.
Now I have declared on Gilga with horses and xbow and a general coming. I will take none of his cities as his ziggurats are currently netting me 300 gold each and he has 12. I would much rather farm him then sure for peace and back off ... BUT...if I see a chance at loyalty flipping some cities I may take his cap. The important thing is not to take a lot of cities as that = grievance = no more dip favour, either gaining or selling. I am now buying my libraries and have winged huzzars on the way to visit Tomyris with. Pillaging campuses gives huge science and after the first pillage round a civ will often later fall into a dark age where it is easier to flip their cities but even if not, they kindly rebuild their infra for me to pillage again and as they fall behind colonial war and 50% gold for killing earlier units card can be used
Rule 1. Do not get a classic golden, they are more fun later for flipping... and you get a lot of faith pillaging, thousands of points.
Rule 2. Stay below 150 grievances if possible.
Just makes for quite a different and quite engaging game, and you can stay allies with people.