Reddit mentions of Anker USB C to USB 3.0 Adapter (Female), Type-C Adapter with Data Transfer Speed of Up to 5Gbps, Compatible with MacBook 2016, Samsung Galaxy Note 8, Galaxy S8 S8+ S9, Google Pixel, Nexus, and More

You don’t need a bunch of dongles. There are hundreds of options that combine all of them in to one.

I went with this Satechi adapter because it has anything I could need. They have cheaper versions with less ports too.

I also grabbed two of these Anker adapters in case I just wanted to plug in a single cable.

With these two options I can plug in 99% of accessories that I will ever need.

I'm using this, and it works without problems for me.

Will this or this work with the gamecube adapter I know adapters work but does this one?

'Best' probably involves a fancy RasberryPi setup, but I have found a process that works pretty well for me (based on advice posted here). I got a USB-A to USB-C adapter that goes directly into my phone. I have 'TeslaCam Viewer' on my phone and when I see that there are sentry events I review (and delete) them directly on my phone. That way clips don't pile up and if somebody hit the car I can potentially deal with it while they're still there.

Aukey is an OK brand and that should work just fine. Anker has has incredible customer service almost as good as Oculus so I try to stick with them if they have an available product but the cost a bit more.

Well, the reviews look OK on that one. What I do on Amazon is I use the review search feature to search for "MacBook Pro" in the reviews to see what people's experiences are with it. Seems like a safe order since Amazon should let you return it if something is wrong.

I forgot to include the adapter links you asked for. There are two kinds. One is a very compact adapter that is cheap and easy to carry around:

https://www.amazon.com/Anker-Adapter-Transfer-Compatible-MacBook/dp/B078NKPGW9/

The disadvantage is the USB-A end can be so wide that it blocks the adjacent port. To solve this is another type is on a short cable to get the wide USB A-part away from the laptop body.

https://www.amazon.com/gp/product/B074DRG8RR/

As you can see these are often sold now in 2-packs for less than USD$10. Both kinds are so cheap I got a pair of both, so I have one of each type at the desk and one of each type in my bag.

Note that those adapters support USB 3 gen 1 at 5 Gbit/sec. This is fine for most things. But if maximum speed data transfers are a high priority (for example external SSD with USB 3.1 Gen 2 port), you could spend a little more to make sure you have adapter cables supporting the full 10 Gb/sec speed of the USB 3.1 Gen 2 ports on a current MacBook Pro.

I don't see any problem for 5 years, unless there's a suddenly change in technology or trend. The progress of computer innovation has been slowing down lately.

It's highly unlikely that 8K video will become mainstream in 5 years. The 2018 MBA can handle 4K editing. Export time is definitely longer than a 2018 MacBook Pro, but honestly, I never just sit and wait for export, I use the time to go do something else.

Intel won't mass release any 10nm chipset until late 2019, and who knows if there'll be more delay. Even then, it will take another year or two to mature. There has been speculation that Apple may make Macbook with their own CPU. Even if that happens in a year or two, it will also take another year or two for software to maturely make the switch. Also, wifi6 is on the horizon, but ac isn't going away.

The USB-C ports on the MBA are also Thunderbolt 3 ports. When you need more performance out from the machine, you can always plug in a eGPU.

BTW, for moving onto USB-C, I bought a few USB-C to USB 3.0 adapters and just leave it attached to my devices and cables which I use the most.
https://www.amazon.com/Anker-Adapter-Transfer-Compatible-MacBook/dp/B078NKPGW9/ref=sr_1_6?ie=UTF8&qid=1549487928&sr=8-6&keywords=usb+c+to+usb+adapter+anker