Under the idea of a Hail-Mary cipher, similar Voynichese types are unlikely to appear under the same column (i.e. encode the same character). Long sequences of the same character repeated are rare in medieval manuscripts, basically only found in Roman numerals, and in that context they are limited to a maximum of four consecutive occurrences.
Fragments like these are hard to explain in that way:
<f75r.37,+P0> qokedy.dy.sheety.qokedy.qokeedy.qokechdy.lol
<f75r.38,+P0> qokeedy.qokeedy.qokedy.qokedy.qokeedy.ldy
<f75r.39,+P0> yshedy.qokeedy.qokeedy.olkeedy.otey.koldy
A B C A A A D
A A A A A E
F A A A G H
<f42r.20,+P0> shol.chol.shoky.okol.sho.chol.shol.chal
<f42r.21,+P0> shol.chol.chol.shol.ctoiin.c'os.odan
A A B C A A A A
A A A A D E F
Another problem with anything based on a table of words (nomenclator) is the great uncertainty in Voynichese word separation. Entries in a nomenclator must be clearly identifiable. This could be achieved with a system similar to that discussed by Patrick Feaster, where written spaces are irrelevant and tokens are separated by a set of rules (e.g. 'q' always marks the start of a new token, or 'n' always marks the end of a token etc).
EDIT: in You are not allowed to view links.
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Login to view., Jürgen Hermes shows part of Trithemius' tables. Here it can be seen that similar words are spread through different letters (which in You are not allowed to view links.
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Login to view. appeared in rows). As discussed in the paper, this arrangement can result in a high number of consecutive similar words.
Illustration from the paper:
EDIT2: with the arrangement discussed by Hermes, the sequence qokeedy.qokeedy.qokedy.qokedy.qokeedy could be part of a word like
GREENNESS
EDIT3: f42r.20 corrected as suggested by Nablator