No Amiga architecture is no more relevant today...
But if you enjoy your pC today remeber that in PC world they were very inspired by Amiga technology.
No, not really no.
Check diagrams of A3000 motherboards and how buses were conceived. It inspired all modern PC architecture diagrams...
No, not really no.
Check diagram blocks of CD32... It is the same of Playstation1...
Sony copied the same technology of CD32 but wisely added in Playstation vector graphics and a first 3d engine...
These platforms have absolutely nothing in common no.
PCI BUS technology of PCs was inspired by Amiga Zorro BUS
Not really, no.
Audio section of DirectX engine in Windows was taken directly by Bars&Pipes Amiga software technology.
HAHA

No, not at all, no.
There is still an Amiga technology up to date and still unsurpassed:
AUTOCONFIG!
Still unsurpassed? Do you know how PCI works? There have been autoconfig-capable busses both before and after Zorro, you know..
Plug and Play on PCs is nowadays a very stable and relying technology but in its early days it was called PLUG AND PRAY due to its instability...
You're talking about ISA Plug and Play, which has *nothing* to do with the autoconfiguration capabilities of the PCI bus (and later incarnations of it).
Recognizing hardware peripherals it is the only modern techology were Amiga can teach a lesson to Peecees, because our Autoconfig System for recognizing and install on the fly hardware peripherals is still amazingly perfect... You can look at any ancient classic Amigas and take a look on how beautiful our system was....
The Amiga was a beautiful solution, but it doesn't cure cancer.
PC engineers should take a look on Autoconfig so then they could improve Plug and Play technology more than usual and reach a new era even in hardware peripherals.
You seem to be stuck in 1995.
(edit: fixed quotes + typo)