MSI laptops are very poorly construced mechanically. Plastic is VERY thin and soft like paper, screen is not locked to the body when folded, other laptops have motherboard and screen attached to the casing, MSI has casing attached to motherboard and screen. It does not have rigidness at all, and is too delicate for carrying around. Also, just after 6 months the fan went loud, and the bloody replacement fan is 40 bucks on Alexpress, bloody hell freaking laptop fan. No more MSI thank you very much.
And what model MSI is that?
Having seen and touched every MSI model as launched so far, and taken a couple dozens apart, that sounds like a gigantic load of FUD..
You have warranty, use it, MSI will happily change your fan.
In Europe MSI is honoring international warranty for 2 years, you can open your laptop, repaste it, change HDD/SSD's, WiFi cards, RAM's, and your warranty will not be void..
Now, that MSI model is a bad example, thats more of a gamer/high perf laptop..
You mention noise, I smell you had an old model GP60, that chassis was over used, and MSI had a problem where half the Foxconn made heatpipes where baddly soldered and almost all of the laptops would have one heatpipe broken from the finned part of the heatsink..
What is the thing with a laptop i7 is BAD or if someone needs an i7 better get a desktop?
I'm using a second hand Toshiba P50, after a repaste, a 480GB BX200 SSD and 16GB of DDR3L its a work-horse, it weights 2.44Kg and I find that its light, I wont break an arm if I need to carry a 4Kg laptop, my bag as way more than 4Kg inside it and I can happily carry it all day?
For better examples, think Dell XPS's, its the only thing that comes close in specs/battery.
Or [sorry] the Razer Blades, they are basically a Mac in black..
There is also the more profissional oriented line of MSI, and some Zenbook's.
The thing about battery duration is that almost only Apple makes a laptop with one single M.2 SSD and dedicate half the chassis to a battery..
16GB of 2133MHz memory 2133Mhz is DDR4 for sure....