Is there a possibility that the first or even better and the second letter of the plaintext are revealed as an extra hint, since i tried using some known texts from putative english poetry "not entirely straightforward". Now i have implemented a program that calculates all possibles combinations but all of them are more than 2000000 posibilities. if these letters are revealed still no one can find the putative English poetry but if one tries "brute-forcing" one can lessen the possibilities keeping it as a Level 2 challenge.
Secondly i do not know if one says that "it cannot be recognized as english poetry" if it means that the linguistic of this kind of poetry does not contain correct spelling english words or it it contains "enigma" format words
If the mtc3 team thinks that these details are forbidden to be published for all maybe some of them might be revealed by a PM since i think few are using "brute-force". This way more members might be helped to solve these type of challenges