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Some other modules may need a library for hook_boot() and this module doesn't support that, which is a serious drawback.
It may be as easy as implementing hook_boot(), or any other bootstrap hook and maybe replacing some functions, like drupal_get_profile(), which is defined in common.inc
Still, this doesn't mean any library can work at bootstrap, as they may have other dependencies but if it does, it would be nice to provide a way for modules to use it.