Maybe useful an option to use Mb, Gb not just K in files sizes, and an option to add extensions exclusions in Auto File Selection, for instance to exclude .srt files,

in the settings look here to change file unit:
settings-user interface-output formatting

in the settings look here to eliminate small files:
settings-transfers-files

thanks about measures, worked, but about small files I use Auto Selection, but SRTs are unchecked, with an white list, Auto Selection can uncheck all small files keeping just white listed extesions like SRT.

I agree, an white list for Auto Selection  can be fine, like *.srt or cover.jpg