One feature I would love to see if an option for 'appear busy' to the public when they visit your booking page. If every single slot is available, then a business looks undesirable. This feature provides the appearance that a business is in demand by allowing the administrator to set a percentage they'd like to look busy for their working hours. Another cool feature to add to this request would be the option for the administrator to also select the actual time slots they'd like to remove. Calendly, Book Like a Boss, and a few other booking providers offer this feature and it is a must for smaller or just starting out businesses in my opinion.