So far Bangladesh has had the most series/matches cancelled out of all teams (of course it would be us!). Half a series in Pakistan, the home tours of both Australia and New Zealand, and a rare 3 Test series in Sri Lanka. The positive is that with an actual WTC, these series will have to be made up. Secondly, both Australia and NZ were set to tour Bangladesh during the monsoon season where the result was a guaranteed 0-0 draw with probably no more than 5 sessions being played throughout the entire series. Hopefully they will be rescheduled to actual cricket season.
The tour of SL is looking increasinly likely (SLC wanted us to tour during the original window but the BCB declined). However the SLC wants to replace the 3rd Test with a 3 match T20 series while the BCB seems keen to keep the 3 Tests and add the T20s.
Looks like Pakistan tour to Zimbabwe in April/May 2021 as per FTP will be announced soon.
"The Pakistan Cricket Board today confirmed the men's national team will tour South Africa in April 2021 for three One-Day Internationals, which will be part of the ICC Men's Cricket World Cup Super League, and as many T20 Internationals," the PCB said in a statement on Tuesday. "Pakistan has now agreed to fulfil its Future Tours Programme (FTP) commitment prior to visiting Zimbabwe for two Tests and three T20Is. The schedule of both the series will be announced in due course."
World Super League matches have to be prioritized, looking at what the ICC has done to the test championship (shared points for a lot of unplayed games) Bangladesh have been the biggest losers as most of their series' went unplayed.
I understand there is still a lot of time for WSL, but you never know with ICC and the biggest losers could be nations like Zimbabwe, Netherlands and Ireland who don't get priority games in a Covid affected world.