I don't know about you, but I've got my fan curves set based off liquid temps which you won't get without the software. It will also alert you to a pump failure.
Also, if you care about the bling, that's going to need the software.
??
why would you care about coolant temp vs cpu temp?
The only time i even ask members to look at coolant temp is to trouble shoot there lcs system when something doesnt seem right.
Afterall, coolant temp will effect the cpu plate temp which then translates to cpu temp.
Most PWM profiles in bios you can manually set fan curves based on cpu temp.
That means u can adjust pump speed and fan speed if your pump is connected to a pump designated cpu header which most boards are now coming out with.
(of course this only applies to AIO's and not real LCS pumps so please never put a 2amp pump header on the board.)
If the RPM sensor on the pump is connected to the CPU fan header, you can have the PC warn you as well in bios.
That section in bios should look something like this:
I do agree with you on the single bling aspect, you cant control the LED's on your cpu block without the software, but overall the software is not required if you dont care about the LED being white.
But overall i still dont think not having the software is a recipy for doom.
Infact i have serveral AIO's which i do not run the software for.