What do I need to modify or upgrade to ride a Royal Enfield Machismo 500 on a daily basis?

The Royal Enfield Machismo 500 is a classic beauty that was designed in another era, for another time, and with another set of riding conditions. Some modifications will likely be needed, or at least be highly beneficial, for those who want to use it as a daily rider in today's traffic and road conditions. Simple comfort upgrades to more significant performance enhancements were all possible. How could the Machismo be altered so it is better suited for everyday use and yet still retain its classic charm? Think about safety revisions, longer ride comfort, reliability tweaks, the performance boost. Are there any must have upgrades that make a world of difference on the ride? How can you keep the bike feeling the same as it was, but also be more usable in daily life? Consider both minor tweaks and major overhauls that could make the Machismo a more versatile every day rider.