A debug mod already exists, which does the same thing, without having to have prepared savegames (sorry to say it).
http://forum.shrapnelgames.com/showthread.php?t=36453
I also made a mod that allows you to recruit units to the max (100 per turn) for testing large armies, it's in the same thread.
A mod, that allows to control the level of research, can be easily constructed I think.
Researchers can be modded in three ways:
Magic paths up to 20 (iirc)
8 * 20 = 160 RP
+2 = 162
Researchboost up to 25
187 RP
Magic Scales tested up to 20, don't know what the upper limit is
207 - ???? RP
Which should be a lot more comfortable than researching/building armies via map/modding commands.