Let's start with the list.
Animus Vitae... Nope. Just nope. It's a
CCW that can get you a PT for any close combat kill, but really, WS4 S3 A3(4 on charge, 2CCW bonus included), a character that could be challenged and be thrown into fighting a tough
CC guy.
You should also drop that 1 shardcarbine trueborn, as you've noted, blasterborn is very easy to shoot down, as anything
DE is, so you should minimise your loss whenever possible. Even if you don't get shot up before you get into range, the moment they are at that 18", after 1 turn of shooting and hopefully destroying the vehicle, they'll get shot up now.

Whether or not blasterborn is an effective unit depends largely on 2 factors: 1) terrains, you want
LOS blocking terrains as you move up the board, flat out whatever, but most importantly, stay out of sight, they're a single fragile unit with 12 poisoned shots and 4 S8 AP2 shots, I'd fire at them before they get into range too! 2) target saturation, you need other big targets on the board to draw attention away from your expensive blasterborn unit... So, while blasterborn is often said to be 1 of the best configurations
DE have, they aren't the auto-win unit, in fact, I don't think we even have an auto-win.
Warriors gunboats, now I understand that the
SC will allow you some early turn shooting, but remember it's usually the assault 4 profile that you're using, as you should be looking to move your gunboats up soon as possible, and once within 12" range, they really aren't offering that much when you have those
TL shots, it also makes this unit a tad much more costly. Also could consider taking off that flickerfield, I'd say. If I was to run gunboats -I don't run them often-, I'd probably use early turns to flatout up the board so I can use those splinter racks rapid fire sooner. And yes, dissie is great, fire a few at a
TEQ unit and you can laugh in their face for thinking their 2+ save is the bestest in the universe!

But it's ultimately an AI weapon, which we really aren't in shortage of, the mass of wounds from poisoned spam will do just as good at taking out
TEQ as a few dissies shots can, but what we lack is
AT, our poisoned weapon and unit's natural strength can't even hurt an AV10 vehicle! While a single
DL is hardly reliable, as you've noted, one more
DL is still one more
DL.
Warriors on foot, nope, just nope... But if you drop all those I mentioned above, you might be able to buy them a venom.

Hell, you could even drop them for a minimal size sniper-wracks unit to snipe with your haemy while claiming backfield objective!
I'm rather interested to see why you're considering dropping your only 2
AT units for 2 more AI units(jetfighter is much better for AI despite its name indicating otherwise), what's your plan with that? Personally, I'd probably beef up the
AT side of thing as your current list is so lacking in that, such as turning those reavers into
AT reavers with blaster/heat lance(dropping the caltrops).