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My project does not have a ton of dependencies and I made sure to limit my use of reflection (not because of graal, just personal preference) but even then I had dependencies that required me to explicitly define runtime reflection (in my case the dependencies were log4j & caffeine) or use an agent which can easily miss some, here is the relevant issue: https://github.com/oracle/graal/issues/3028. I also have some cryptic issues (recently, not being able to compile a static field from a record, who knows why).
GraalVM native is definitively worth looking at. Still not mature, but getting better. I did small demo project over holidays, and will keep testing this through 2022 with spring and plain java as well. Gains on ARM64 (arm64v8) platforms (raspberry pi 4) are quite visible. If you try this, compilation is slow and takes a LOT of memory. To compile for ARM64, I had to create Quemu VM with 20G of RAM on my x86_64 desktop to create a native image for raspberry pi 4. https://github.com/jveverka/spring-examples/tree/java-17/spring-native