I am bound to use PuTTY because of various processes and scripts, but that GUI is really getting on me. So if I cannot use another SSH tool, can I have something on top of PuTTY to make the experience minimally bearable? I'm only aware of MTPuTTY but the only thing this does is making more tabs of the same cavemen GUI.
There are a lot of forks and extensions/modifications available, many of them are listed on the PuTTY website (https://www.chiark.greenend.org.uk/~sgtatham/putty/links.html). I can name a couple: