There is a UI mod by Strogo, it prevents start bombers and nukes and maybe something else from snapping to the things so you can easy groundfire between things.
you can modify the mod
open this file Mods\RUI\hook\lua\ui\game\commandmode.lua
14th row change from:
local selectTolerance = {RULEUCC_Attack = true, RULEUCC_Nuke = true}
to
local selectTolerance = {RULEUCC_Attack = true, RULEUCC_Nuke = true, RULEUCC_Tactical = true}
Edit: mod name random UI improvements