I never use templates. I never use presets. And I never mix from scratch unless I get hired to mix something that was tracked somewhere else.
I try not to get mind-fucked by the overwhelming amount of choice that DAWs offer, either. First, I try to get the best sound I can during tracking. For instance, with drums, once I have the tracking sound I want and have finished recording the drummer, I'll tell the band to take a break and I'll start working immediately on the drum sound and apply processing to get the sound I want then and there. This includes faking room sounds, compression, EQ, etc, if need be. I immediately start heading in the direction I envision. Once I get where I want to go, I'll pretty much stick with that sound for the duration of the production. Of course, there are always little tweaks along the way and production decisions get made on a song-by-song basis, but for the most part, I want to hear the sound I want to hear as quick as humanly possible. I don't believe in leaving things dry and sculpting them later. I like to have an analog approach in the digital world where decisions are made early on and quickly. Nothing irritates me more than belaboring over a snare sound for a week. Nothing kills vibe more than obsessing over minutia. Forest for the trees is a flow killer.
In my opinion, the best recordings were made by engineers who knew how to make decisions while recording. Compressing and EQ'ing on input, and imbuing THEIR SOUND onto the recording. This sometimes even entailed purposely tying the hands of the mix engineer because too many options for him meant a weak performance by the tracking engineer. I dunno, I like that idea. It's confidence and if you can compartmentalize your workflow this way, I think it will improve your recordings on all levels.