I would like to see a control as in an addition to the kendo mvc toolkit where you could build into an application the ability for customers to design the layouts of their reports.  For example.. Say you have an app you built for multiple customers.  Now the app might have a series of basic report templates in terms of queriable object model outputs. Being able to build an interface that would allow the customers to design their own layouts for what fields, positioning on the page etc..labels etc. and save that design to their account for future consumption would be a huge selling feature for an application. 
Specific example an invoicing application.  Well you could pre build a bunch of templates and have the customer choose one (the only real option currently available)...or you could provide a list of fields(based on object models for the underlying report query) and have an embedded designer allow them to design their own invoice and save it.