Hi Kevin, sorry it’s taken so long to get back bud.
First thoughts, sounds pretty cool overall. About the intro; at times the harmony doesn’t really stack up vertically across the strings as well as it should and the voice leading isn’t really that smooth horizontally between some of the chords, others are fine though. Still, starting to sound more like a complete string section now than in previous tracks. I think something to practice would be at say 1:56 to try and get some cello lines moving underneath the vocal and a good way to begin is with notes 1 5 8 9 (of root positions chords) and then 3rd and 5th an octave above the first 3 and 5 as eighth or quarter notes. Maybe it won’t work, but it usually does (or a variation of.)
Using double bass pizzicato does work but it gets a bit dull as it progresses playing on the same beats of the bars. Try to introduce some eighth note or quarter note triplet patterns using notes 8 5 1 or something. Or hitting the 5th after the root at the start of the bar. Used sparsely things like that can make the string parts sound more engaging. I can’t think of any pop/rock kinds of example with double bass pizz. although it doesn’t really matter; if you learn the technique you can apply it to any style.
https://www.youtube.com/watch?v=WPjBnBdq5Os It’s in 3/8 time signature so the first time round of the melody until 0:32 the double bass is just plucking on the first beat of the bar but then on the repeat it begins to change rhythms a bit now and then, not that much but just the odd bars throwing some slightly different rhythms can be good and breathe the much needed variation into a part. Not sure if that will help or not. xD
Another nice orchestration is to have the cello playing in unison with the vocal melody at times, dropping in and out and for this use a mid to high amount of vibrato. It can sound really nice if done right though don’t have them in unison for too long, half a bar, a bar or two bars is usually a nice change in the orchestration. Experiment with using different amounts of vibrato too.
Using the strings as a pad sound is fine for the rock part I think, fills in some space nicely.
Still, overall it gives the right vibe and interesting track anyway with the strings/rock sections, good going! Probably missed stuff out, tired as shit and succumbing to a cold methinks!