I think those are some good ideas, although of course you can also use external software, such as MSE or TeXnicard, which are much more versatile in their capabilites.

Also, I have read about Lore Seeker booster pack algorithms. Here are some of them:

• Simulated collation: According to the document I have, not implemented so far in Lore Seeker. Due to a deficiency in SQLite (non-window aggregate functions cannot have their own ORDER BY clause), this cannot currently be done in TeXnicard by implementing the collation purely in SQL, but it can be done in PostScript.

• Naive algorithm: Select ten commons, three uncommons, one rare/mythic, and one basic land (if any), without replacement.

• Taw's algoritm: As above, but replace ten common slots with monocolor common slots, one per color.

• Reuben's algorithm: Start with the naive algorithm, and then discard it and try again unless all of the criteria are met (there are several criteria which must be met).

Multiverse might not implement all of the above (and I would think it unlikely to do so), of course, but they are a few ideas. There are also some other ways that Wizards of the Coast uses, so you may consider those too. Some are probably easy, and others are more difficult.

Another feature, which TeXnicard has, and I am not sure if MSE might also have (I used it before but do not remember), is the ability to set the random number seed.