Since when do we need a special category for a run like this?
Glitched
Low gltich
or
Glitched
Low glitch
If a run is sufficiently glitched, the glitches are definable enough, and a low glitched run is demanded enough, then a low glitch category works and gets accepted on the site.
I'd say the two most requested ones that aren't already done are low glitch Megaman, and Sonic 3. Someone doing those is virtually guaranteed strong audience support and publication (given that the technical quality is still on par with the glitched versions).
I see no need for additional categories. 'Route intended by programmers' sounds like a most terrible idea. Who's to say what they intended, and more to the point, why do we care what they intended?
Route used by SDA? I see what you are getting at with this idea, but it still doesn't work for obvious reasons.
Let's just try for some common sense here. If a run gets too broken, it loses that familiarity/nostalgia factor for people. If the main source of that brokenness is one particular glitch, then a run avoiding that glitch could be publication worthy (by having an audience support, being sufficiently different from a glitched run, and having a well defined goal).