Can you rate the complexity of these changes (tip, alar, deprojection, bridge refinement & nostril reduction)?

An experienced rhinoplasty surgeon will not have problems with any of the items you mention. Just make sure you go to an experienced surgeon whom you feel is best qualified overall. The moves you describe are all basic rhinoplasty things

Relative complexity of different aspects of Rhinoplasty: All of the issues you mention, bridge reduction, Deprojection, ,nasal tip, Alar base reduction (same as nostril flare reduction) are part of a routine rhinoplasty. The reduction of the dorsal hump, and reduction of the alar base width are the two most controlled and predictable and therefore the least “complex“. Deprojection of the dorsal profile excluding the tip is similarly predictable and in the control of the surgeon. This therefore is in your least “complex“ category. Deprojection of the nasal tip requires a few additional “tricks“ and by your categorization would be slightly more “complex”. The tip in some cases can be very simple if it is a tip with average or slightly thinner than average skin and good Cartilage framework. If however the tip skin is very thick and the tip is very bulbous the results are more limited. It is not more difficult technically to perform but the results are just not as much in the control of the surgeons hand. A thick skinned bulbous tip would therefore be in the most “complex“ of your category list, but not because the surgery is more difficult but because the outcome is just not entirely in the control of the surgeon.