Now that THQ is gone, rather wait for the back catalogue to be signed by new owners before buying any of the older games.
Ubisoft should buy the Stuntman IP, both to make the previous games available but more importantly so that Ubisoft Reflections can work on the series again.
SCE sorting out the Devil Dice rights so that it can make the Xi series available once more internationally would also be welcome.
Not sure people need to worry too much about Volition needing the Freespace rights, the studio could always collaborate with Egosoft on a Freespace style game in the X series, or create an entirely new IP with Deep Silver.