There is no way Baam would be able to reach FH level without his statue as an irregular, saying that is saying the Ha twins are on FH when it comes to talent and we know it’s false.
I don’t see why the child of Arlene and V should be more special than the child of ari han and yurin or Gustang and blossom.
I generally agree with this logic with one caveat (otherwise it checks out).
The twins COULD be more powerful, and higher ranked, than their father, who clearly ranks much lower than even other FH's. (which are CLEARLY ranked by strength)
Seeing as they'd have half of their strength from their stronger mother.
Arbitrarily, their mother could be power level 8. Father a 6. They'd split the difference and be 7's each. Could be why we haven't seen Ari FH ranking, nor theirs.
Of course they wouldn't have shinwonryu, exemption from contracts, or the immortality - but they could be stronger all the same. Enne/Adori and others tower-born yet high in ranks don't have shinwonryu. Shinwonryu isn't the be-all, end-all. Plus, the exemption from contracts only makes them capable of killing those under contracts. It doesn't make them stronger per se. Even the FH's have contracts which are redundant and 'shackles' - so unlimited potential doesn't mean it is realized. Their power is likely whatever it would be without the contract exemption (because they have voluntarily placed themselves under contracts for shinsoo anyways).
Also, again, see Rachel.
Although I'm still wondering if those born full-blood by irregulars don't have some other special status we don't know about. Technically, they ARE from outside the tower. We don't know if the contracts work on a biological basis or a legal basis - or what. Biologically, they are from outside the tower. Legally, they may fall under an exemption themselves as they were born in the tower, yes, but from those that are from outside (see: offspring of diplomats and other examples of two foreign nationals birthing in a different state - the legal status of the child gets fuzzy)...