1. Don't hoard, seriously. You have to double check if that scooter fits with the city operating on. For example, non swappable batteries requires constant recharging, while swappable batteries are swappable as needed, they can disappear easily. (Hello Lime Gen 4+)
2. If an e scooter has exposed brake lines, this is a complete no-no, because every time there are those that clamp your brake lines, which makes the scooter unsafe to ride. Also if that scooter is not designed for fleet use, don't retrofit them into fleet use. (Veo Astro 3 is an example)
3. Know your bounds. If you are not permitted to operate there, don't operate there. Geofence your scooters. Usually universities or college campuses prohibit riding or parking there.
4. Motor: The higher W your motor uses, the better it runs and can go up steeper hills. Note that it uses more power to do so, especially going up steeper hills. For Example, the Okai ES600 uses a 750W motor can go up 25% incline hills.
5. Test, Spend, And Learn. Upgrading Motor controllers and expending coverage to bigger distance can increase the focus to more riders, in the end can lure more riders. Learning is important to the ever changing world in mircomobility.