[cflsystems]

In XC4 you can just modify existing template with an if statement for the main variable assigned to the page.
In XC5 if the module doesn't have its own template already you will have to create a module. Even if it has its own template it is way safer to create new module so your changes not to be overwritten with next upgrade.

Unfortunately the simpler the software is for the end user the more complicated it becomes to modify. A lot of my clients can do simple template changes to their XC4 carts. This is almost impossible task in XC5. You either have to know PHP OOP and Doctrine or you hire a developer. (Not sure if you do know PHP OOP and Doctrine why would you do anything else but developing...)

Bottom line is - even the simplest modification in XC5 requires changes to be done via custom module or you will lose them on next upgrade.