Agreed. Sometimes I wish there was some sort of universal-pollution mod that would deter power-spam by penalizing you for spamming machines instead of teching towards more efficient ones.
Indeed. But, this is modded MC where it's taken for granted that nearly *all* worlds will eventually reach a stage where most/all resources are available in near-infinite supplies and one can build anything they want, i.e. approaching creative. It's not a binary progression, though. Some resources will become extremely cheap/plentiful well before others, and it's tempting to spam energy producers that use those resources.
A mod-pack I've been thinking about making would center around Big Reactors, TiCo, Iguana, Tinker's SteelWorks, MPS, MFFS and mining by hand for most of the game. TE3 is core, but would have Dynamos disabled. ExUt included, but generators disabled. I personally love Magic mods, but it would fit with the theme, so no Magic :-(
Similar map to AgS, but on a small, spherical islands floating above the void ("moons", conceptually) with limited resources on each moon to mine. You're a robot (rather than human-like Steve) and have to 'eat' metals and power yourself to stay alive. To progress to other "moons" and eventually reach the planet (yes, I'm aping BoP "Promise Land"), you have to upgrade yourself with jumping power and flight. Hence, MPS, sans the OP tools. You'd eventually be able to move your base on a moon using MFFS. Massive power requirements, of course
It would involve HQM and Minetweaker and the *only* power available would be Big Reactors or one-time use redstone recipes, like the TE3 potato "battery", but swapping out the potato for something more fitting with the themse. Sure, you can make cobblestone furnaces, but for power, Big Reactors is it. The only way to get renewable Yellorite would be MFR Laser, and it would be scaled so one would have to build a very efficient Steam Turbine.
The same concept could be done with ReC. I'm just not as familiar with the process to picture how that mod-pack would work in my head.