I'm pretty surprised to see this thread haven't existed yet when the group already has a topic of shippings.
Knowing the fandom I'm sure there will be many interesting offspring ideas in the future especially because the magic breeding magic seems already quite usual with homosexual pairs.

Now with the students, the topic of cross breedings comes into the picture which brings up the question:
How breedings generally work with other none pony species and how it effects for crossbreeding, the birth and the offspring.

For example, we already have a few SpikeBloom and RariSpike shippings where a pony and a reptile is cross-breeding and as I saw the offsprings are mostly mammals since the mothers are ponies but what about in the case if Sandbar and Smodler would have a baby since in this case Smodler as a dragon would be a mother. Would she lay an egg?

6707112
Smolder would pretty much lay an egg.