Hell, the increased prep time would even be somewhat justifiable if Alchemy would not still have the nested dice pools and/or be subjected to a ton of restrictions and caveats.
That's my opinion too. How hard would it have been to say "Spend [force] hours to produce a preparation that other people can use. They use the mage's dice pool. It has [dram] charges. You can have [Will] preparations active at once."
Or something like that. The whole idea of successes on one roll becoming dice on the next is a really bad mechanic that - as an earlier poster pointed out - has the effect of dividing ones' effective dice pool by 3.
