I tried that Hazelscotch Cookie I made, the one you said was similar to Rusty Pelican. It's good but not amazing. I used CAP Hazelnut v2 in it and that is the dominant flavor, which almost has a praline nut flavor going on. I only let it rest 5 days, but made a 60ml bottle, so plenty more to steep longer. We'll see what it does.
Yeah I wanted to mention when it comes to hazelnut the one to have is the Flavor West brand. It oddly adds a creaminess to mixes and at low percentages does solely just that without the hazelnut flavor. Every now and then I get this strange niceness to my personality so I didn't have the heart to shoot down your hazelnut Capella. On the plus side, Hazelnut CAP v2 is better for you. I think the Flavor West brand has the nasties that everyone tries to avoid.