Ah, no, no technical problems with your mod Dr P, I just didn't know it existed! Having found it, it should now be easy to use it for KingMaker if people choose to do so.
Okay everyone, there are a few options for research in this game. They are Difficult, Very Difficult, and Dr P's mod. Dr P suggests using Very Difficult Research and moving levels 2 to 6 down by one (to 1 to 5), leaving level 6 essentially empty (see
here).
Okay, so finally, to summarise, here are the research costs to reach each level for each option:
...........Normal...Diff...Very Diff....DrPMod
Level 1:.....40 .....60.......100.........100
Level 2:....100.....160.......260.........100
Level 3:....200.....320.......520.........260
Level 4:....360.....580.......940.........520
Level 5:....620....1000......1620.........940
Level 6:...1040....1680......2720........1620
Level 7:...1720....2780......4500........4500
Level 8:...2820....4560......7380........7380
Level 9:...4600....7440.....12040........12040
So the research costs under Dr. P's mod are basically similar to the Hard setting for low level spells, and the same as Very Hard for high level spells. Personally I think this is pretty clever, and recommend using it. However, the decision is ultimately down to Xietor. Since he has already said we should go with just Hard research, and the game is now close to starting, he may wish to stick to that decision, which would be a very reasonable thing to do. It is my fault this has not all been worked out before!