Report Studio: Combining report views with "Report reference" page doesn't provide correct results

(Concerns Report studio page explorer)
I am contacting you as we are facing issues when combining report views.
We are using the new 10.2.1 functionnality that allows to reference report views in a report to combine them in the execution to have one PDF output for all.

However, when we define parameters for report view and if we insert them in the report as report references, when we run the report, all parameters with the same parameter name take the same value even if the value is different in the initial report view selections.

Actually in the report references properties, the "Saved Parameter Values" property has only two values "Merge" or "Ignore".
We are using merge which may cause the problem as it merges all parameters.

However, there are only 2 options : merge or ignore. Ignore will force the reselection of all parameters which is not what we want and Merge will take the same value for all parameters with the same name.

There s clearly a need for an other value in the "Saved Parameter Values" property to allow us to keep the original prompt values without merging them or ignoring them.

This is very simple to understand with the following example.
A controller wants to run a book of report with two report view of the same report, one for 2014 (Trend) for 2015 (Budget).
This is impossible
with the current functionnality as because the parameter is the same for year in both report views (P_YEAR), it will take the same value for both and it will returns two report output with 2014 combined.
This is not useful.

We are asking for a urgent hotfix.