The Lumix G series has relatively low residuals, along with such as the Olympus Pens. Provided there is no absolute must and can't live without feature, I think buying a current generation camera is a sure fire way to lose vast chunks of money very quickly. I bought the G5, GH3, G7 and Pen EPL-5 new, but all at a small fraction of the original prices. All were older models at the time of purchase except for the G7, which surprisingly was still current but had a huge Black Friday discount with Cash Back. Exactly the same occured this Xmas, when the GX80 body was discounted to a net £250 ish for the body only, again, a current model but heavily discounted with Cash Back. It's always worth looking at the new price depreciation curve for cameras on Camerapricebuster. The G7 body had an introductory price of £600, mine cost £250, the GX80 was about £520 on introduction and was selling at £250, less than half price on offer.
I'd love the added features of the new G80, but past model history suggests it will be half the current price to buy new in about 18 months or less. Of course, all cameras are going to lose money faster than the Greek Government (well, maybe not quite that fast!), but for those with finite resources, I suggest it makes sense to try and minimise these losses by timing purchases later and resisting GAS impulse buys.
Thought for the Day - My G7 and Lens Turbo 2 cost 10% of the cost of the Canon 5D4. So why is the Canon such a poor workhorse for 4K video at that infamous price? (Yes, I shoot FF Canon too but with the 5D2).