In that case, IMHO, the tool should NOT suggest a license from the
list at all, and definitely not arbitrarily suggest the last one it
loaded, which is highly likely to be wrong. If it wants to suggest,
then suggest the most likely option out of the variants.  Or can it
suggest an intentionally invalid placeholder eg "{MIT choice}" to
make it explicit that the maintainer has to actively make a choice.

$ license-fedora2spdx  "(GPLv2 or MIT or BSD)"
Warning: more options how to interpret MIT. Possible options: ['Adobe-Glyph', 'BSL-1.0', 'BSL-1.0', 'HPND', 'HPND', 'ICU', 'MIT-CMU', 'MIT-Modern-Variant', 'MIT-enna', 'MIT-feh', 'MIT-open-group', 'MIT', 'NTP', 'SGI-B-2.0', 'SMLNJ', 'SMLNJ', 'libtiff', 'libtiff', 'mpich2']
Warning: more options how to interpret BSD. Possible options: ['BSD-2-Clause-FreeBSD', 'BSD-2-Clause-Views', 'BSD-2-Clause', 'BSD-3-Clause', 'BSD-3-Clause', 'BSD-3-Clause', 'BSD-3-Clause']
( GPL-2.0-only OR {{pick MIT choice}} OR {{pick BSD choice}} )

Your wish has been granted. Implemented, built and I just submitted it to bodhi as license-validate-14-1

Miroslav