A little more insight into the pan/tilt verses ball head thing...
Most people consider a ball head faster to position, but for most things you sort of just move it around until the framing looks right, and especially tracking a moving subject or a subject that frequently changes position. Like wildlife or small children and there the differences are sometimes subtle . One control to lock the head and one control to lock the pan base.
With a good ball head like my Markins you don't have to lock the ball. You run it in a "Sweet spot" where there is enough tension to hold it in place for the shot, but you can freely move it around without playing with a friction lock knob. It can't get any simpler and easier than that.
To shoot architecture you might approach it differently. Raw speed of framing is not so important as getting there in an organized way.
You would want to line up the lines of the building properly so you would level one axis at a time. Each change in axis won't affect the other two because they are different controls. Each line has to be perfect, which is not the case following a deer or setting up a typical landscape where you basically get things the way you want and then level the horizon.
(I know someone will object to that and talk about how a landscape needs to oriented in all three axis too, but typically you are not working at the precision that is required for something like architecture. In my very humble opinion. Having never seen a landscaper with an angle gauge and I don't carry one myself.)
When you start talking about angle gauges it sounds more like the architectural problem. You don't want one angle done perfect than then have the ball head lose that angle, which is probably more likely than not.
There is a variant of the pan/tilt called a geared head. They can get fairly expensive ($260 and $450). Most people use the Manfrotto 405 or 410 heads (small and large).
The Manfrotto heads have push button designs such that you push in a button (knob) to do gross adjustments, and then turn the knob to do fine adjustments. I think they are typically used for macro where minute adjustments are required, but like all these things, some just like the way they work, for other purposes. I mention this for completeness.