I think you should add to the coming update (I hope one is already planned

First, a rework on the Thermal Generator: as they are already done, they're something unrealistic I hate: they work as windmill do.
I mean: 1 Thermal Generator is supposed to "suck" heat from the ground. So it's quite as if the Thermal Generator was cooling that ground, isn't it ? So in a realistic way, you shouldn't be able to put 13 Thermal Gen arround 3 cable (1 side for output) surrounded by a lava lake + Obsidian Cube + a lot of stone and no air (I'm describing a way of having very efficient Thermal Gen) because one would use this heat and won't leave it to the others (I know, it's not supposed to be 100 % efficient, even not 5 %, but I dislike this way of taking advantage of it as you can do with Windmill [Windmill Tower])
I suggest: Buffing the Thermal Generator BUT adding a EU-generation Penalties for each Thermal Generator in the 15*15*15 area (a huge one, like - 2 EU/t)
OR, more realistic, funnier but maybe harder to code: Implementing "Heat Pipes" or others heat-sucking devices, that suck heat in a very small area (3*3*3 for example) but wich would be cheap and able to bring this heat up to the Thermal Gen. It would maybe need a Pipes-level puting max heat brought by the pipes before exploding.
The 2nd points concern windmill: as I already said it, I hate Windmills Towers: So I would like to see implemented an "Advanced Windmill" that would maybe have the same EU-generation Penalties for each others Windmill/Adv. Windmill in the zone to avoid W-Tower. Something that I dislike too (because it's uggly, hard to use because very High but OP): the fact that Windmill-setup are always done at 200. To avoid it, just set a max level to the EU-Generation depending on how high it is: for example, it could be:
Windmills(Advanced) between 70 and 80 generate normal output, *1.2 between 80 and 90 and from 90 to 100 *1.5. Make it break automaticly at 101 or more.
To avoid Windmill Tower, I simply suggest: -2 EU/each Windmill in the area, but reduce this area to 6*6*6.
Example for Thermal Generator + Pipes/Devices sucking heat setup (to explain how I would like it to work)
= Therm. Gen.
=High heat-supporting level pipes.
=lower one
= Stone, Lava etc ...

= EU generation could be good, but it's not the most efficient.

:Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Cable: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline:
etc ...
:Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Cable: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline:
:Cable: :Cable: :Cable: :Cable: :Cable: :Cable: :Cable: :Glass Fibre: :Cable: :Cable: :Cable: :Cable: :Cable: :Cable: :Cable:
:Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Glass Fibre: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline:
:Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Advanced Furnace: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline:
:Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Glass Fibre: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline: :Rubber Trampoline:
etc ...
= better EU-generation, more efficient design. With that way of working, you would have to create a complete network of pipes and you couldn't simply create a 20-Therm-Gen-surrounded-by-lava-powering-Mass-Fab
The difficulties would be to make it to be non-laggy. Maybe it should be a system including the levels: the more you are close to the Bedrock, the more each block will generate Heat-EU. (Because, as I already said it, under Bedrock is supposed to be a HUGE lava lake (Ocean).