One fact that is being forgotten is that there are no preconceived plans for a divorce (planned in advance) and remarriage to the first husband. The intention or 'Neeyat' is of utmost importance. We have become accustomed to the mechanical Islam and believe that we have done our duty. The simple Islamic law is that a woman cannot remarry her first husband following adivorce that has to be in line with the directives of the Quran (and not the 3 Talaq Talaq Talaq ritual). The second marriage (wrong or deliberately termed Halalah to satisfy the lust of professional Mullahs wh are ever ready to do the needful) has to be a normal one like the first one and may last for a lifetime . If (a big IF) there is divorce only then the woman has an option to marry anyone she wants to.
The question of a planned second marriage in anticipation of reverting back to the first one is illogical, unislamic, inhuman and a mockery of Islamic values.