The 4K pro option has it's fair share of benefits over 2K, such as exclusive OpenEXR footage and it's bigger resolution (Obviously). However people who have initially bought the 2K version will have to spend more money when upgrading to 4K pro.
For example, the Large Scale Dust Wave collection costs $125 for the 2K version and $250 for the 4K version. It would cost $375 in total if they bought those two.
Please could you offer a cheaper option for 2K users to upgrade to 4K? It would be super helpful, especailly since 4K in general has been getting more and more popular with content creators!