TPMS is never a bad thing. I would have considered it for my '15 also. As a race car drive my brain is always having me do a visual on my tires frequently. Having TPMS is just added insurance. My .02 cents...
TPMS can be a very good thing as long as the rider/driver understands it doesn't replace proper tire inspection and maintenance. TPMS won't tell you about that nail sticking in the edge of the tire for instance, until it gets flung out and creates a sudden huge leak while you're riding down the highway at 70 mph. Long before TPMS alerts you, you would be fighting to control the bike. TPMS also won't tell you about that bulge in the sidewall that could be signaling an impending blowout, or abnormal wear with the cords showing in spots, or any of the other things an informed person would look for while doing old fashioned tire pressure checks.
The auto industry has used the low cost of electronics these days to automate a lot of things, like checking oil levels and keeping track of change intervals, mostly because we have more and more people who don't know diddly about vehicles and don't care to learn or take the time to actually check anything. We even have multiple alarms to remind people they are about to run out of gas, starting at about 1/4 tank and becoming more obvious as the level drops. We can't count on people actually looking at the gauge and being able to tell they will be sucking fumes in about thirty miles or less. All of this lack of knowledge and lack of attention is driving the industry toward the autonomous vehicle. People who actually enjoy interacting with and controlling their vehicles are going to wind up on the endangered species list. So before wishing for all this hand holding from big brother on your motorcycles, stop to think about why you like to ride a bike in the first place.
JMHO - Jerry