Variants for Custom Items

[tinymachines3d 0]

First, sorry if this has been discussed but on a quick seach, I did not find anything specific to this. I would like to add more variants here for things like ABL, build plate material and hot end type. Is there a workaround to add multiple variants that can be selected here instead of creating redundant machine profiles with 1 change each? I see under the S5 machine profile that it "has_variant_buildplates": true but I do not see anywhere to select the build plate in the UI. That would be handy when switching from a smooth surface to a textured surface to modify temp by X amount. Also, for an all metal hot end, you could override/offset retraction and temperature settings. 

 

If no more space was alotted in the Custom tab, is there anywhere else perhaps check boxes can go?