Super late response, but:
Tyler799 wrote:Just want to talk about the Slug B, which I still feel is terrible.
It's meant to be a boarder, at least at first. However, it lacks a medbay, or a clonebay.
Slug B is a weaker ship that's also hard to play. It's certainly not the weakest ship in the game, but one of the hardest to use well.
Medbay and Clone Bay are cheaper in the Balance Mod which makes it more viable to switch and a little easier for this ship starting off; they're very common in stores, about a 70% chance of seeing one. You can also use a Reconstructive Teleporter instead of either if you find one.
Learning good boarding strats is essential to doing well with the Slug B; I've got a few videos that would be helpful in my Tips & Tricks series
Tyler799 wrote:If you're very lucky, early-game you'll find easy ships that only take 2 healing bursts to take down.
You should not be using 2 Healing Bursts - this is a big part of why you're running out of missiles so quickly. Most fights you'll be facing 2 other crew in Sector 1/2 (some ships will have 3). It's okay to start a fight a little hurt (at say 85 HP or whatever) - this is how you converse missiles. Using The Safety Dance will help you take on 3+ crew and also pull pilot away to heavily increase the chance of your Heal Bombs landing.
Tyler799 wrote:Now let's say we get unlucky and come across something tougher in Sector 2. A simple defense drone 1, and a medbay. Weapons on the enemy might be minimal at best.
Your boarding isn't going to do anything while the medbay is still up.
This kind of situation is unfortunately common even in the earlier sectors.
This is only going to happen on Rebel Riggers and Engi ships, I believe - it's fairly uncommon. Sometimes you just need to run from a fight and that's fine. Alternatively, you can consider boarding with more than 2 crew if you want, especially if you've upgraded Teleporter. You could potentially punch down their Drone System to remove the Defense Drone, or have 2-3 people fighting their guys in the Shield room while another one of your guys is punching down the Medbay.