I'm interested in collecting some BS-X games while I am in Japan, but I heard some (or all?) of these games are restricting the number of times you can boot them. Which games are affected and is there a way to remove the limit from the memory packs? Thanks!
I am not aware of a list of limited boot games. Also remember there were SoundLink games which can't be played at all anymore. No, there really isn't a way to remove the limit from the pack itself.
Can't help with a list either, but if you could write to the carts, you could edit the header to change (or remove) the boot limit. While there's some theoretical talk about it, it doesn't seem anyone actually ever had success writing though...
You can collect them, but it would be worthwhile dumping them (preferably before playing them to preserve their condition) when you find them as there are plenty of Satellaview games still MIA, that even partially rewritten and games 'invisible' to the BS-X have been salvaged from dumped carts, and that actually the best way of playing BS-X games on your console is through a device such as the SD2SNES (where limits don't apply and hacks can be applied to remove time stops and other issues related to Satellaview being dead). I understand (based on stuff mentioned on Satellablog) that a few ASSEMbler members dump carts, so you may want to have a chat with them if you need help dumping your finds - of course I'm not saying you should share, but even if you don't want to share it, consider giving a copy to someone you trust to keep it safe - it may be the only copy known in existence, and there have been plenty of cases of last known copies of games disappearing when their owners come to unexpected endings. (ooh, all went a bit morbid there).