Just some thoughts....
The nice motives you show here is perfect for stitching, and therefore very seductive
but,
Have you ever noticed how much the light can change in 3 minutes
How much the shadow moves in 3 minutes
How fast and far the clouds are travelling in the sky in 3 minutes
How many trucks that can park in you images in 3 minutes
How many people that can walk in the wrong places in the image in 3 minutes
How many people that can leave the right places in the image in 3 minutes
and so on.......
It's a very common misunderstanding that we architectural photographers have all the time in the world to do our images - a very few times we have, but often you can prepare a take in an hour, wait for an other half for the clouds to leave a hole for the light and then leave you with 10 seconds before a truck enters the scene and after using some minutes to get it to go away - no more lights / or the light moved too far creating to long shadows......
Its not for fun, that you see us running around sometimes to get everything as perfect as possible.
I stitch quite a lot with my Alpa, but seldom more than two images, that's normal durable on most scenes, but relay on making 16 images or 8 for that sake on every scene....
Very best,
Adam