What you did to have persistence is awesome. If you do the ratio of benefits/problems... benefits win largely . IMO It was worse few years ago, and now it's pretty reliable!
Speedboat issue ( It was not already reported, and I have this issue since 3-4 months ago) will be fixed.
It's not a blocking point, you can still open the editor and remove the unit. I also had the second case it happens approximately on 1 of 50 killed unit, not a big deal, kill again the unit a second time and voila!