Basically clrmame assumes absolutely nothing and it should assume absolutely everything. Nobody is going to write another tool because for one thing it's easier to just redownload everything every time than to do that or just paste in the update packs and assume it's all fine with no audit. The batcher can't even get through the latest mame, failed... Anyway it's a real pain in the ass of a program now and you could make it easy but choose to act like a cunt face instead and post some stupid muwahaha bullshit. Real nice.