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That's pretty much the crux of it I think, for the moment at least. I can see a number of ways around this, but these would have to be embedded into the way XOOPS handles themes and templating overall. For example, how about a system similar to the way Mambo handles menu items and News articles: You get a couple of little arrows pointing up and down ro rearrange those items into the order you'd like. If XOOPS could incorporate something similar into the way blocks are displayed it would make for slightly more flexibility. But that said, it's hardly a critical issue, and I'm sure it would take a lot more time to do than it's currently worth the devs spending on it.