I may have been underestimating Scyllax and their silly jellyfish tentacles. If you buff them and get the charge, eleven of them will happily kill more Justaerin than the Justaerin kill of them, and same goes for almost any other elite terminator. Might even be worth cramming eleven of them and a minder into the Macrotekmobile and shoving them up the board, that's only about 330-360pts plus transport and can make a good attempt at sweeping any infantry unit other than 5-10 elite termies with a serious character attached, although feedback will do a number on them afterwards and cause nearly as many casualties as the 5-man justaerin squad did. Probably acceptable at 25ppm, people don't really expect the Mechanicum to run at them.