I think (in my mind's eye which is not 100% accurate) that Anker can make a better Powerhouse with a variable voltage DC output so it bypasses the inefficiencies of doing the DC-AC conversion in the Powerhouse to then have a further inefficient AC-DC conversion to the end device (laptop, etc).
Then there is what to do about USB-PD as I think that is the probable future for laptops. SO say a 60W or 100W output USB-PD.
So something like this but done better.
That would make laptop recharging last longer.
I also think Anker can do a better job with serviceable parts. For a typical Anker product costing $10-$30 I think the 18 month warranty is a good balance of cost vs risk but in the $300+ region a bit more serviceability would be a good thing. Most of my $300 investments have screws, teardown guides and an active ebay spare parts market to stretch them into the 3-4 year sort of life.
I have in my mind's eye a "slot" design where you can slot in 100Wh batteries then the whole Powerhouse can then be flown as it has parts which fall within the 100Wh TSA FAA CAA current common limits. It can then can be assembled on the ground into 400Wh+. Then it can be sold in more countries, currently its lack of ability to be flown limits its sold countries.
Given the Powerhouse is now 17 months in the public, given it was $330 for 2 weeks in May, that another $330 or even lower is quite likely.
But I could equally be wrong as it could just be about to be discontinued with the next product then soon (and initially probably sold at $500 with a time limited discount).
So the only thing you can do is think about the today - do you need it today if so buy it today - rinse and repeat.