Zoho Booking Payments & Sign Integration ideas/needs

Zoho Booking Payments & Sign Integration ideas/needs

Am a Zoho One customer but sadly am forced to pay for additional software because Bookings doesn't have all the functionality that I as a consultant need:

Here are some features we need in Bookings asap to make it better for consultants and coaches etc:
  1. Coupons at checkout - common practice in coaching to offer discounts and coupons for referrals
  2. Ability to display more than one payment option for the same appointment type at checkout (eg. Pay in FUll price, installment x month price)  - some packages are £££ so installment plans (Stripes allows this) should be a no-brainer 
  3. Ability to edit/customise all of the notifications emails sent to customers - I have searched high and low on how to edit the confirmation and reminder emails, and can't find it, sorry if I am wrong
  4. Proper integration with Zoho Sign so that a customer can book and pay for an appointment, then sign their contract immediately BEFORE the appointment is confirmed. 
  5. Ability to book and pay for appointment packages so that is a customer can schedule all their sessions from a package at once, or as they go according to their preference. . . maybe this would require some kind of Portal integration? 
Would love to see these added, then Zoho One would truly be everything a consultant needs.