Dude forget Jeehad or Mujaedeen, you cant sell that to any Bangladeshi politician. If we want to take the land then we need to take India in our side and invade. Proabably not too many PDF wala will agree to this but thats the only way for permanent solution. India will be more than happy to watch our back.
In return we can share Sitwee and sea access with Indians.
I do not think we need India to watch our back but China is critical.
BD is probably looking at not being ready to take Rakhine till 2025-2030 at the earliest. By then China will be the uncontested power in the whole of Asia.
If China oks it then India wont dare do anything as it would be too much loss and little gain for them.
Main thing is that BD needs to modernise with sufficient quantities of modern weapons as soon as possible. BD military is way better trained and led than Myanmar ever could be.