Cause following the straight-in missed approach procedure while circling to a different runway could leave you as a greasy spot on adjacent terrain.
No, it won't. Failing to follow the missed approach proceedure could do that to you, but following it will NOT.
A missed approach proceedure is not merely for a straight in approach. If circling minimums are applied, then the missed approach proceedure applies to circling, too. Are you not familiar with circling obstacle clearance criteria?
Circling obstacle clearance criteria does not account for attempting to circle below the circling altitude. However, the reason that circling minimums are higher than straight in minimums is to account for circling while staying within the circling approach area radii while maintaining obstacle clearance. If one executes the missed approach within these radii, one has obstacle clearance so long as one remains at or above the circling minimums and executes the missed approach from this position.
One is to continue in a climbing turn in the direction of the circling maneuver, until established on the missed approach course.
If terrain or obstacle protection is an issue, the missed approach will be modified or have specific instructions. Commonly, one may be told not to circle left, or right. This may be for missed approach proceedure purposes, or for obstacles, or noise abatement. The purpose is really not relevant. If the proceedure gives certain provisions, these must be adhered to.
If you are flying a given approach, you execute the missed approach for that proceedure, and no other.
Most missed approach procedures have an initial turn that is away from the highest terrain.
Not necessarily. What would make you think that?
Doing the prescribed turn during a miss from a circling approach could result in the airplane flying into the highest terrain.
Not if you're following the missed approach proceedure. Why do you suppose a missed approach proceedure is published? To kill pilots less sharp than yourself, or perhaps just to ensure terrain and obstacle clearance while providing an order to flight operations?
After getting enough altitude to clear terrain, intercept and follow the straight-in missed approach procedure for the approach flown. (ILS 32 in this case).
What's this fixation you have with a "straight-in missed approach proceedure?" How many approaches have you flown that have separate missed approach proceedures for a straight-in, vs. one for circling? It's a missed approach proceedure, not a "straight-in missed approach proceedure. The published missed approach proceedure applies regardless of weather one is landing straight-in, or circling, unless instructions are published to the contrary.