I'm in a similar position, i'm currently running a 4 year old 970M system, and it's been great. I'm ready for a new system though, as i'm hitting the point where i'm having to significantly drop settings to keep framerates at 1080p a little. To be fair i can still hit 60fps in destiny 2 on medium settings so i'm not too bad, but the time seems right.
I'm not that fussed about portability as really i just have a gaming laptop for playing on the sofa with, so I've ruled out any of the super thin chassis with MaxQ chips as with them it seems you have to spec up at increased cost to get the same performance, so for example for 2070 you seem to need a 2080MaxQ for the same performance, and unless you need the portability it's just a crazy price increase.
I had started looking at 15" laptops, but have noticed one thing that has changed in the 4 years since i got mine is the thin bezel revolution. Meaning 17" laptops are no longer the huge monsters they used to be, and ive been tempted to move up to a 17", which generally from where i am now would only be about 1-2 cm on the width and nothing on the depth height or weight on my current system, which seems nice.
Looking at all the reviews so far, I'm liking the MSI GE75 with the 2070, but i must say the Aorus 15 with the 2070 looks a great laptop too from the vids i've seen. It's almost a shame the 17" version isn't available any time soon. (i think at CES they said 1/4 2, so i guess we're looking at April for that. Having said that neither machine is available now anyway so it's all academic, for at least a few weeks anyway.
It'll be interesting to see how prices hold up once the systems are generally available as by all accounts people might be holding off a bit for the dust to settle. The RTX drivers seem to need a lot of work, and it's hard to know what the performance of any of these machines will be in ray tracing in 6 months time.
It certainly is tempting to same some money to play todays games at 1080p. But for me these machines are 3-4 year investments and I think i'd rather wait a few more months for either RTX prices to come down a bit or for stuff to start using RTX better to see where we are. I think it 24 months times i might be stitting regretting getting a 10 series now and not having any RTX capability.
That's my ramblings thoughts on the question anyway.