Change your quality to point when you get 32-36 fps and you will not have ANY problems. Everything at medium looks really good if you're looking for great graphics with low fps hit. But if you have crappy pc and still trying to set everything at high and extreme - lets be honest, 20 fps? 23? Its only your problem.
Yes I can use other presets. That's what I do for the moment (swapped K ENB for Unreal Cinema).
I could modify existing presets but I wouldn't have support.
Besides, most people are not experienced in ENB tweaking.
I love K ENB, perfectly my tastes. But I would like to more enjoy playing with it. It's author has a monstruous config and overmaxed everything. My config is already good and yet I am about 20fps in 1920*1080 (I already optimized textures mods and reduced their resolution). I don't have any problem to play with it, but if I can avoid CTD in battles and enjoy smoother battles without noticying graphic loss, it could be nice.
If Boris decides to let things as they are, it's not a problem for me. I can tweak, I can use another preset (whereas they match less my tastes).
But most people is NEWB !