I have been playing Fonline for a while and have enjoyed it all lots, but the main thing i like and always spend the most time doing is crafting. But other then getting jumped whilst mining HQ ore or getting mugged on the way to sell crafted items, there isnt really much challenge to crafting at all. To make things alittle more interesting you could add schematic's to the game. They would work kinda like in Arcanum and you would need to have schematics before you could build certain stuff.The schematics could be gained by random drops or set quests or even looted from certain high level enemys. When i played arcanum i would spend hours just searching for schematics and it was always very exciting when i found one i had spent a long time looking for , so i could add alot of fun to Fonline for alot of players