The new USF tech does not have any voice line or animation so it difficult to understand when it completed. Can we get a voice line?
I am not well informed about possibility to code phrases for units, abilities and so on, but it is a good catch! I suppose it's possible, becase in 2016 were added some special voicelines for StuPa and Panther.
Oct. 25th Update
Fixed a bug where the Brummbar and Panther were using incorrect speech lines
Also, Thunderhun collected some issues with voicelines, and i added them to the first post. In addition, Ostruppen's MG 42 upgrade doesn't have any voice lines iirc, and soviet commissar too.
Thank you, i will add it to the list!