Is it possible to add individual toggle for buildings and their respective technologies akin to alternative space science recipe already added?
This would allow additional customization on users end, for example, to disable some redundant (in user's perspective) buildings or disable building utilizing same graphical assets as the other mod, but with different functionality.

Duplicate thread, already said this will not be implemented. Only Specialized Science can be turned off due to its niche spot in the mod. I will not discuss this further and I please ask you to check the other threads before opening new ones.

Allright, how do I cut/hide uwanted tech? Ex: minibeacons? Can I just cut them from tech tree or is there some thing else?

For transmitters you'll just have to remove all references to them in the code. For others id have to rewrite compatibility or techs and everything. Also i don't under why couldnt someone just. Not use the thing they dont want to use.

Also i don't under why couldnt someone just. Not use the thing they dont want to use.

Twofold problem: preferences and cluttering:
1) While I enjoy the implementation of new stuff and things, I dont enjoy all of them. And yes, I can enjoy good with the bad...
2) ...but I can not, as bad is othen in the way of the good on the tech tree or in the building menu. It's a constant reminder that I dont utilize the all the feachures and it ruins my immersion.
I mean, it's no skin off your back, you already made your stance on the issue, but exposing more configs and options for players to tinker with is a major QOL buff for any mod, at least in my book.

For transmitters you'll just have to remove all references to them in the code.

As for the former, is the realy a need to cut out the feature entierly and not just hide/replace unwanted tech with something else? And I'm talkin about local copy, not the main release.

What would you even want to replwce it with? Just hide the transmitter

Just hide