Like we discussed before, lots of free spins after registration often attract players with no intention to deposit real crypto. I think in the long run, this high amount of free spins will be too costly for you guys. It's a very competitive market right now and rather fight with a good deposit bonus than lots of free spins, unless you just want to spend money (or crypto) and get low rollers. Low rollers love free spins without any requirements to deposits, but high rollers look for other kind of bonuses. Your set-up with a generous reward program sounds more like a long term plan, so I've always been confused by the costly free spins after registration that doesn't really add much value. Anyway, it's your call and I bet that in 3-6 months time, there will be free spins after registration on your site.

Update: I hear that you changed to free spins after deposit - good call!