I'm pretty sure that the national boards see the EU-national thing in a very similar way to the Kolpak thing: its not something that they are particularly fond of for some reason
It's a bit annoying, as it does raise standards. I used to be really against it, but let's look at it another way: if you can get the three Cachopas, Tom Cooper, Tendo, Doug Bollinger, Faf du Plessis, Michael Klinger in at various stages in their careers, it can only serve to raise standards.
The argument is that it can get in the way of young talent coming through the county systems. While I see how this might be the case, ECB Level 3 and 4 coaches are doing far more to stifle the development of natural talent than sharing a Leicestershire dressing room with Faf du Plessis. Besides that, there are eighteen English counties compared to only six Australian states. Hell, why not get in as many EU players as possible so long as they're better than the players that they're replacing. Maybe it would even draw crowds - would you rather watch Aadil Ali (Leicestershire) facing up to Benny Howell (Gloucestershire) dibbly-dobblers or Moises Henriques (Portugal) facing up to Mitchell Starc (Czech) bowling thunderbolts? And who do you think that someone like Haseeb Hameed (Lancashire) will learn more from - Michael Klinger (Hungary) or Karl Brown (Lancashire)?
For me, it's a no-brainer on the proviso that EU passport-holders are allowed to play as locals, even if they've represented Test nations. Get them in and let the next generation learn as much as they can.
EDIT - Do you think some of these posts should be moved to English Domestic Discussion?