The reason i am putting it in Mod Development is because, i suck at FTL, especially boarding ships, so i need someone to help me balance it. So please tell me if i have done something wrong or it needs to be nerfed/buffed. Any other criticism would also be appreciated .
That is some simple but effective splicing you did there. Looks great! How big does the shield bubble get though? Cause that can cause some problems if it is bigger than your screen or overlapping with the enemy window (allowing enemy projectiles to spawn inside your shield and bypassing it completely.)
Considering the Loadout and Balancing:
Orienting it closer to either Mantis A or B might be a safe bet for the start. Right now, the ship is much more vulnerable than both of these ships cause it lack the offensive capabilities of Mantis A (bombs) and the defensive ones of Mantis B (lvl 2 shields and defense drone). The starting weapon it gets is basically only useful for taking down Zoltan shields, which the augment takes care of anyway.
IMO taking the weapon away and giving it a defensive boost would be more interesting for the ship, as it can already deal easily with auto scouts due to Lanius crew. There are few dodge/stealth based boarding ships yet, so that might be something to consider.