I get the 'perspective' of consistent branding - BUT - if you are an ISV with a Managed Solution you want to retain your own identity; and currently if you add a Modern XML Theme to your solution the client has all their Solutions in the Environment reflecting the ISV Branding.
The current functionality does not adhere to ASC 842 guidelines for pro-rating first month. The only option is based on convention "None" so lease commencement is same as start date and the monthly schedules use that date for each period or "Full month" which does not allow for pro-rating
It is a very essential need for users !A lot of our Dynamics365 Demands have long time duration and we absoltly need to see them in our Dashboard without changing period manuely (beeing able to have personnal period as default as required here).
We at COSMO CONSULT have implemented a solution for avoiding using the "pockets" of availability. Also planning into the past is avoided. But the solution is not on the marketplace, it is an app in 50000 area.