I agree - not ideal if you don’t know what you’re doing. Although I’m relatively new to quads/drones, I’ve been into DIY electronics for years and have experience with flight controllers and associated bits and pieces on fixed wing planes, so I don’t mind hacking apart a few wires and splicing/soldering things here and there.
Some other observations on the Tyro79…
The supplied cables are only taking a 5V feed from the FC and passing it to the 5V output on the VTX. Whilst this seems to give power to the VTX and makes it work, I’m not sure it’s the best way to power it up and I suspect is not getting the best out of the VTX in terms of power and so on. The VTX does have a 7-24v input which is currently empty. There doesn’t appear to be a suitable voltage output on the FC to feed to this though, apart from taking a line straight from the V+ on the ESC->FC plug socket. Do we reckon that is safe/advisable to do? If so, I’ll do that and then use the VTX’s 5V out to drive the camera from its voltage regulator which might be a cleaner voltage source than from the cheapy FC.
I’d also like to pop a runcam split in there at some point but there is no more room on top of the stack. I’ve seen some creative solutions on Thingiverse which border on being a bit of a bodge. Alternatively, there are a selection of nice looking carbon 3" frames that have a longer ‘coffin’ style layout that should accommodate some more kit inside. Although they’re only about £10-15, it’s starting to get away from the “oh this £58 quad is such a bargain” 
