Non-A2, but I went to replace my inadequate halogen headlamp bulbs (dipped and mains) on the Touran with Osram Night Breaker Laser Next Generation replacements - I got the main beam ones out first and they were such a sod to get the new bulbs back in, with crap access meaning you couldn’t get purchas on them with your fingers in order to turn them so as to lock them into place!
At one point I almost gave up and called the RAC - such rubbish design considering headlamp bulbs do blow occasionally. In the end I did it, but was as it took over 2 hours I’ve decided to leave the dipped beam bulbs for when the car goes in for its cam belt after lockdown ends.
Hope the A2’s bulbs are easier to change?!
On the bright side (arf arf), the new main beam bulbs are significantly better than the OE ones so it was a win overall. If Merlin’s headlamps turn out to be similarly poor then I’ll do the same upgrade. I wonder how long they’ll last.