This addon increases the range of the slider for the Height and Width of the Default Raid Frames so you can make the default raid frames larger, or smaller (which also makes it a nearly useful addon for the default UI).
This Addon does work with Blizzard Raid Frame - Indicators and Blizzard Raid Frame - Raid Icons though I do not and will not support them if any compatibility issues arise (though there probably never will be).
This addon is inspired by this necro'd thread off the would of warcraft UI and Macro forums and the need for the ability to make the default raid frames even more resizable.
If you would rather not use an addon for this purpose you can use this macro:
/run local n,w,h="CompactUnitFrameProfilesGeneralOptionsFrame" h,w=_G[n.."HeightSlider"],_G[n.."WidthSlider"] h:SetMinMaxValues(1,150) w:SetMinMaxValues(1,150)