Hmm dyi? Are you happy with your flavored incomparison to jc's flavor? I've been wanting to DIY but I never think it will be as good. Since we both are jc fans would be interesting to get your take on this
Part of the driving force getting me into DIY was I loved Solstice, it caused me to accidentally quit. Then I stopped tasting watermelon in it. Then it started tasting bad. I don't know if it's my tongue or they changed something (it tastes like they added tobacco flavor to me).
I've got a watermelon that tastes like watermelon but it's not the same because I don't get along with PG so I try to keep my PG flavoring below 10%. I eventually hit on peach-strawberry that I like as much as Solstice, except when people smell it they think it's cotton candy.
I was only really worried about replacing Tundra. It's only a basic mint bomb but it was dialed in. I had peppermint-banana that is a good mix, a mint bomb that was good but nothing that had me thinking it could replace Tundra. Then I hit on a simple Doublemint, so far that can be my ADV like Tundra was.
I don't know about tobacco flavors, I stopped being a fan, but I have worked out some coffee flavors I like for situations tobaccos do well in. I doubt if you could replace Silverthorn.
It may take time but you should be able to hit on enough flavors especially if you're not limited on PG amounts.
Even my gunkiest liquids are much better than everything from JC recently (Tundra seemed to be cleaner and more equal to my DIY but they must've changed something).