If you could give your e-bike one major upgrade, what would it be?

[Ja sa bong]

To be very honest, my e-bike does everything I need which makes me very happy, but over time, there are a few upgrades which I might have in mind for the future. It might upgrading to better brakes, or an increased battery capacity, or adding a completely different new tyres. I'll definitely make a decision very soon.

What's the next upgrade you're planning to buy for your e-bike?