I do not understand why they are considering following the lead near bangladash. That is just the word of a marine search corporation. While the west australia lead was confirmed by several government search teams who picked up the blackbox ping.
I have no idea what georesonance found near bangladesh, the pictures really are intriguing, and it might be some plane, but whatever it is, it is not flight 370. There is no way a plane can rest on the bottom on that ocean, while giving engine monitoring satellite pings and underwater black box pings thousands of miles away. But if authorities dont follow up on it, conspiracy theorist will say its a coverup. May as well have a look whats on the bottom of the ocean there.
It could still be a cover-up, but unlike conspiracy theorists I'm actually waiting for some evidence of anything before I actually make any judgements. At the moment I'll go with the likelihood of it just crashing in a massive ocean due to whatever reasons. I'm always willing to change my stance as the evidence prepresents itself though.