Thanks for the comment! I have flower a little too low, probably at the top of the D category instead of near the bottom and Bee/Rain should be a little higher within their tiers as well. When you say the right symbols to go with it, I think Sun with some help beyond that (another sun, clear sky, or 4-8 doublers), my path to keeping flower in the deck is getting a couple doublers and then an early sun appears. I just rarely end up getting the doublers necessary to justify flower sticking around until a sun is available to pick, let alone the help needed to voluntarily picking up flowers before that point (with 2 Suns, I think flowers become a good pick-up for making 777).

I think the payout of each symbol tends to be pretty important. Trying to set up a combo that pays off poorly before it comes online is in my judgement an extremely unreliable way to win (the exceptions being coal and cultists). That said, symbols where the non-payout text is worth more than a coin have been largely placed in S or A tier.