Well for Lerk spikes I'd say give them 2 options. 1: just add them to slot 1 with bite
Or
Have 2 lerk species, 1 with bite in the first slot, second slot wouldnt be spores, it would be some sort of close ranged attack (mabye something to do with its claws while in mid air?) and its armor would be increased but HP decreased.
For Lerk Species 2: it would basically be the support lerk, 2.0 slots (spike/spores/umbra/pscream) with higher HP then the assault lerk but lower armor.
I say do this instead of just giving 1 spikes and the other bite for more diversity, also i use the lerk from the fade colored pack, mabye have 2 different colors for the lerk species, (lerk fade coloring is basically a darkish black grey where the tan is on the original model which looks nice)
Also I requested in the S&I forums awhile back givint the marine team a CS option menu for radio calls, like weld me, cover me, help, scan here, etc.
of course i dont know why I wasted 2 minutes of my time to post this because this will never get to the dev team....