Firstly hello everybody and Bobik
İ have 3 suggestions
1-there should be 3 trade options: by a stall like this
that have an inventory for goods and If you want to buy that you have to keep equal amount of coins for lts price and click to good and click on buy button.
The second option is hand to hand trade. İts same as steam trade. Switch to peaceful mod click on a player and click on trade button. Like the steam trade:you offer something, your partner offer something, both select ready button and voila.(this option enables smuggling with more roleplay)
Third option is the market that have much larger capacity than stall. İt allows great trade guilds to dell their goods.
(Pls pls pls dont add something like auction mouse in wow. İ heard the trade post and it will destroy the roleplay. Villagers should produce goods in villages and sell them in city.)
2-the regional farming: in minecraft you can visit every biome and collect all of the seeds and plant them in 1 biome. İts something like planting rice on steppes or tundra. There should be soil types like chernozem and terra-rosa and all of the plants and seeds need specific soil type to grow. With this idea guilds will found colonies and fight for other resources.
3- there shuld be different types of ships like cog (medium speed, for both fighting and cargo transport) fishing boat and longboat (fastest sahip, for shock attacks on coastal villages)