The suitcase comes with a plethora of options, and the standard equipment that comes with the suitcase includes a fully covering and waterproof rain cover, an extreme amount of dividers that you can mount inside the way you want. If you look at my pictures, you can see how mine is set up to make room for a little onboard-luggage for long haul flights, such as a pajama, a fresh set of underwear, medicine, etc.
I highly recommend getting the extra little laptop bag that holds a 15" or a 17" laptop (I carry a 15" MacBook Pro), a large tablet (I carry an iPad Pro 12.9"), a large SmartPhone (I carry an iPhone XS MAX), and plenty of small items such as pens, business cards, etc. It fits into the room on the front that is made for laptops. You can go without this add-on as the room inside also have pockets for a tablet and a phone, and it's got a divider for a laptop. I find that the little extra bag provides extra protection, but it is also a great convenience through airport security because you can just pull out the bag of electronics and put it on the x-ray conveyor belt for the officers to examine, as they always want you to separate your computers from the rest of your luggage. Onboard it is also convenient as you can easily take your laptop and your tablet/phone from your trolley in the overhead compartment and leave the trolley in the compartment, and you only have to deal with that slim little laptop bag that easily slides under the seat - also in coach. It even comes with a mountable strap so you can wear it as a nifty shoulder bag should you prefer that.
The other optional add-on I am quite fond of is the flare packs in many different colors that sell as a complete package with new zipper straps, new wheels, and a new extra thick handle cover, that makes it more comfortable to wear. The colors you add to your trolley with this makes it a bit more personalized. That way you will not get it confused with somebody else's luggage. The wheels are available in many different colors, and they are of the same fantastic rubber quality, and the wheel bearings are phenomenal. When you pull the cart around this is something you'll notice.
The cart is exceptionally sturdy. It makes it a little bit heavier than other trolleys the same size. On the other hand, the fantastic wheels and the backpack capabilities even out that inconvenience.
The only negative I can find is that it is pricey. Nothing more than can easily be explained by the amazing features and the quality of this suitcase, but if you are on a tight budget you'd probably want to economize and plan to put aside a little extra to get what you need to buy this "Rolls-Royce" of trolleys.
One thing I cannot say for sure is if it fits all airlines demands when it comes to carry-on luggage. I always travel 1st or business, and there it will never become a problem as the limits are much more extensive there than it is on coach/tourist-class. So I'd advise that you check that you can bring it on the routes you use a lot. If - on the other hand - you either travel business or 1st class, or you don't travel by plane with your camera equipment, this is also a fantastic trolley for the photographer who only settles for nothing but the best. I often use my ThinkTank at home too when I drive out to do a whole day of photo shoots, as it is so convenient to have it lying in the boot of my car as a comfortable, compartmentalized way of transporting all the necessary equipment. At home, I use my ThinkTank to keep everything in the car while I drive around and a shoulder bag where I take the most important stuff with me when I park the car and walk to the site of my photo shoot. If I already know that I'll need many different things when I get to the site, I simply convert my ThinkTank to a backpack and bring the lot on my shoulders.
The ThinkTank is truly a "Tank": It is robust as h...., and it will get your equipment anywhere you want.
I give the ThinkTank TakeOff V2.0 my greatest recommendations.