Ive had a similar experience with modular…
so my post is from my personal experience, as Im still inexperienced in modular.
(loads of experience here on lines, I’m sure they’ll chime in - I look forward to hear them too)
I think it’s a pretty natural phase to go thru, as many of use are drawn to the familiar and go down familiar paths.
For me, familiarity meant, I loved the subtractive synth sound, thick with a prominent filter,
and even worst, I was so used to big lush pads sounds - which I wasn’t going to get from my (small) modular.
I knew that wasn’t what i was going for with modular, but I think it meant i found it difficult to stray from that path. so, I’ve had to fight my natural inclinations, but means Im still a bit of a reverb junkie 
To me, your rack looks well balanced, (I assume you use O&C as a modulation source)
I don’t think you need anything new.
I found the temptation is to think I was missing something, so kept adding new modules looking for inspiration.but I think you start making progress when you are kind of ‘bored’ with what you have… that stage where you know what it can do - thats when you start experimenting, to find something new in what you have.
FM, I found can be difficult… as small changes can result in big changes in sound.
but you have the basis of a 3op voice - so perhaps mess with feedback, and small changes.
I found subtly is a big part in all of this, its why I like modules with built in attenuators,
perhaps a little FM , or a little wavefolding thats being modulated subtly might be more to your taste.
also I deliberately tried to find things I could not do on my others (traditional) synths,
eg. I really like to do audio rate modulation of the filter, or introduce unusual feedback loops.
west coast - I could never really emulate, but it was fun to try, so I created complex waveforms via fm, a bit of folding then use a LP filters as a low pass gate… also pinging filters, which seem to work better on some filters than others.
in the end I wasn’t trying to emulate, rather just experiment to see what new sounds I could make, and find out if i liked them or not.
anyway, I think I’d just keep experimenting with what you have, once you find a direction thats working… that might be a time to think if another module might be more suitable.
(*) random tip, I like to watch youtube videos on modules I already have… to see what more talented people can do with them… that usually makes me realise Ive not explored their potential yet 