Easiest way to play PAL games is to get A500, very easy mod to get it running in PAL or NTSC. I have done the MOD and works very well in RGB mode.
I do wonder if you could change the Agnus/Denise in A1000 from the NTSC version to the PAL version??? I know that the Composite video would not work, but RGB could.
8361 NTSC AGNUS
8367 PAL AGNUS