Not really. It should be there even if you are using an old version. The parameters are split into groups for each layer, just scroll a bit further.
For handhelds the device and the screen are tied together, although the background will still split scale.
If you are using a 4K monitor you may get lucky using integer, but some handhelds fill the entire screen (GBA) and can only be scaled larger. In this case you might want to try changing the base preset to a CRT shader.
For my new presets just change the base preset line from e.g.
#reference "../../../zzz_global_params/Base_Shader/STD_LCD.slangp"
to
#reference "../../../zzz_global_params/Base_Shader/STD.slangp"
My 3DS, NDS, and PSP already have “Guest” presets, and any monochrome handhelds are using the monochrome parameters so don’t have colored subpixels. (They shouldn’t need integer.) The lower resolution systems shouldn’t suffer much.
BTW, there are tricks for getting the guest shader to look a bit more LCD-ish. (Turn off scanlines, use a slot mask (Trinitron) and increase the slot height and width.)