Coppermine's Bob's module rebalancing on the mod portal
One problem I have had with other rebalancing mods is that they tend to have a bunch of changes together and are an all-or-nothing proposition. For this one I have separated my changes out into a number of independent options, all togglable through the mod options interface. If you disable everything, then the mod will simply do nothing! Therefore you can pick and choose the changes you prefer.
The overall philosophy of the changes is to give a reason to use more variety of the modules and related features. I find that in default Bob's settings I pretty much only use the level 8 raw modules and Mk3 beacons. The lesser items are simply not worth using. This mod adds additional cost and complexity to crafting the higher level and combined modules such that you are encouraged to use the more easily available versions and use this to bootstrap your way towards the more powerful items.
I've tested these changes through two full playthroughs with Bob's, Angel's, SpaceX, and various other minor mods. I tweaked a few things along the way but I'm largely satisfied that these changes are a good fit for my personal preferences.
The specific options available are as follows:
Exponentially expensive modules
Nerfed modules
Expensive combined modules
Nerfed beacons
Expensive beacons
Require modules for rocket control units
Require space science packs to craft god modules
Research cost multiplier for god modules
Require god modules for some Space X components
One thing I have not changed is the maximum possible achievable productivity. That remains 240% (6 level 8 prod modules in a top level machine). That is because I personally do not want to build a megabase (because I do not want to worry about managing UPS) and so I like to have the option to use this level of productivity in certain places. However, in my latest game by the time I had completed the SpaceX endgame I had still not used level 8 modules with very many recipes. They are expensive enough that I picked my targets carefully and applied them only in the most important places, whereas I applied lower level modules more widely.That said, if there was demand it would be relatively easy for me to add further options to this mod to change more things. Let me know in the thread below.