All potent steps to stop the radicalisation but it misses at tackling other causes of the problem. What needs to be done is re access the reasons for the sudden upsurge, it is not like there was a sudden button pressed and radicals started jumping out of the water. What are the triggers which started this? Isis has been going strong for some time now, before that there was a lot of militancy in the world which Bangladesh was not affected by.
One needs to step back and re access policies which are driving the youth to these acts. Till triggers are removed, no amount of monitoring will stop more radicalisation, the best it will do and this is the most optimistic view, stop the radicals before they cause any mass casualties...
One needs to address root causes, which also stopping radicalisation of the youth. Just doing one without the other will leave loopholes which will end up in lose of human life, which is both heart breaking and too be severely condemned by all.
Hoping that no more innocent people die and Bangladesh matures.
Well to be honest a lot of Hasina's anti-Jamati policies may have been quite heavy-handed (some would argue that these policies were dictated by Modi administration).
Dialogue and detente were foregone in favor of tear-gas, baton charge and in some cases of real bullet usage as well as hanging of top leaders. These heavy-handed tactics resulted in very negative social media coverage for the administration's policies and won lots of public sympathy for Jamat and other religious parties. Bangladeshis are generally a tolerant and religious lot with loads of patience and extreme measures/heavy handed tactics (even by the govt.) are not looked upon favorably when it involves beating up Masjid imams. The few radicals needed heavy handed treatment but appeasement needed to be used with moderate Islamic parties. This policy of promoting the moderates was not followed through.
Some would say that local fringe extremist (and violent) religious parties (like Ansarullah Bangla team) have benefited immensely from this Jamati negative anti-Hasina campaign which convinced the general public about Indian takeover of Bangladesh (politically and/or culturally in all spheres of public life) which is the last thing the populace of a sovereign nation wants.
Apparently even a moderate freedom fighter named Bagha (Quader) Siddiqui commented that out of some 100 District commissioners 85~90% are newly appointed Hindu gentlemen. While this is of no import to me personally, it makes great sensational 'copy' for media reports locally and feeds the 'boogieman' syndrome.
The success of this 'campaign' bodes ill for SHW administration, whether or not the propaganda agrees with facts on the ground. When you have the younger groups of new generation Jamatis (experts in Social Media manipulation) mobilize their fellow 18 year olds with this propaganda, the ranks of new radical recruits to Islamist outfits will swell. SHW administration is quite clumsy in dealing with this 'recruitment'. They simply don't have a counter-tactic to this yet.
I would say that eventually ISIS will utilize this radicalism outgrowth in Bangladesh as a pawn for garnering money and/or moral support and ultimately recruitment.
The more there is local perception that Indian govt. is trying to make Bangladesh a vassal state, the more difficult countering radicalism would be. Modi and SHW govt. both need to work toward tackling this perception using overt statements and assurances.