Xero Accounting program - flaws not tended to nor fixed.

I find Xero a nice to have program/platform, however there are a few aspects that need to be addressed as a matter of urgency. 1. Invoice numbers does not update automatically. Numerous invoice numbers are skipped by the program then the user now have to leave all else and go and update the invoice numbers to follow chronologically. This is nonsense. Xero surely have expert IT personnel, have them fix this issue, lock the numbers in order to update automatically. 2. Why are cancelled and or deleted invoices, quotes, and purchase orders left on the system? Why can they not be deleted permanently, alternatively have a seperate heading for all cancelled/deleted documents.3. Nowhere is there a function to add the company Terms & Conditions to Invoice, Quotes and Statements. Neither can a link be inserted to a web URL where the client has to accept the T's & C's. I have researched this issue on the Xero website, blog and various internet links, apparently there is no "fix" for this issue that have been implemented or available in the near future. This is outrageous and unheard off. A line or two of code, where is your IT specialists, let them fix it, not that difficult. 4. Emails being sent from Xero to the client: Why is there no option to insert my business card in image format at the bottom of the email?? Neither can I insert a link to our company T's & C's for clients to accept. Terms and Conditions are the backbone of any and every business be is a SME or a Corporate Company. Fix this email issue, not that difficult, merely a few lines of code..!! Yet Xero expect us as users to promote Xero to other companies knowing these flaws exist for a number of years already and to date, December 2023 nothing has been done by Xero to address these flawed aspects.No Sir, not in my job description to promote a flawed product.