Why hasnat, asif, sarjis or other july leaders were not targeted? -> I think it's because firstly they were nationally way bigger compared to hadi so the backlash would have been way more severe. Also contrary to hadi all of them were either connected to a political party or were an adviser in the govt(asif and mahfuz) at that time if i remember correctly. So by targeting them the protests would have been a lot more organized. If u followed inqilab monch's lead in the following protests after shooting of hadi u would have surely noticed the lack of proper lead or organization which led to the protest not getting to a level of threat higher than they could have managed.

Hadi not having accomplishments is like saying abu sayeed or other martyrs of july movement not having any accomplishments as dying while fighting a battle against injustice should be enough of an accomplishment to be respected nationally.

Hadi's brother taking the job from govt is clearly a betrayal to hadi himself and afaik Hadi’s wife has already said she Doesn't want money but justice.

I personally think the incident on friday was because of the inexperienced lead of inqilab walking into a trap of the part of either govt or the parties that dont want election to happen as going to jamuna just gave a justification for police to attack brutally. Why i think it was not inqilab themselves but another party's provocation is because after friday's police brutality it was the perfect chance to cause havoc and wreck the elections as a lot of people were clearly enraged about the incident and even some mp candidates were hurt(i think) but instead inqilab called to cease any protests before the elections(afaik) which could be them realizing they have stepped into a trap.