Well I've never considered dry hits to be a safety issue, more of an annoyance and allowing the coil to continue to fire and ramp up to an unacceptable temperature is something you simply don't do unless you like the taste of burnt cotton. So no I can't buy the idea that TC is any safer than power mode but I will agree that it is easier to avoid dry hits using it.
The cons to TC, for me, comes down to not being in control of the power to the coil. That in itself has both pros & cons to it but at least my mods don't keep asking that annoying question as to whether or not the atty is new.
The other thing about TC is that it can be finicky. Never had a problem with power but I've had a few with TC on various mods.
I don't want to sound like TC is bad or anything but I just don't see it as all that much better and I am lazy enough to just use the simpler mode. I'd encourage anyone to try both and come to your own conclusions about it.
Dry hits are a health hazard... you can make yourself sick if you get a really bad one, plus you now have a burnt wick, which means that you shouldn't vape until it's changed.
For the control, it's funny that some believe this, usually due to bad experiences, as TC actually gives you a lot more control. A decent mod can either have a "low, normal, high" setting if it doesn't let you set the wattage manually... while one that does, you can control how fast the ramp up it without fear of the dry hit, and can get you to that level of heat that you want near instantly... something that you just can't do with wattage mode.. and pre-heat isn't the same.
From what you've stated though, I believe that you're view is due to just not getting your TC to work right, to be honest. The need to lock the resistance on a new coil only takes a very quick moment, and you don't need to bother with that until you switch it... if you clean your coil (RTAs) and rewick, that doesn't change the resistance, so you'd still be fine to go when you "reload" it.
For it to be finicky... again, unless you have a crappy mod, the only time I've had issues (as per explained in my blog), was with single SS coils, which I figured out that it's simply a case that I was doing coils that were to small to register... this might have been your case. I'm no fan of TI, so I can't speak for that, but between my NI and SS builds, I've never had any trouble for a very long time now... and I do build for 3 other people too. (and that doesn't count my 4 + mods that I have on the go at all times, plus that my wife and daughter have multiple setups too, so it's like about a dozen builds at all times).
I do believe that it's easy to get discouraged from using TC if you don't get it working right, but a bit of patience and frankly, between my family, once we started going to TC, no one wants to go with wattage mode ever again.
Another advantage of TC is that liquids can actually differ a lot from one to the other in terms of power needed, and with TC, a quick increase or decrease in temp setting can make a very noticeable difference in the flavour and such coming through, and no need to play with the wattage and still have all the advantages of TC.
And another thing is that with TC, your batteries can last a good 10-20% longer.