Aren't the vast majority of em still apparitions, the only true exceptions being sunbloods? If the slann can remember them into existence I'm sure they can remember them going around their "daily lives" as well. As for a slann's own interpretation, given how conservative and slow moving they tend to be I'd find it unlikely for any of them to really tinker with seraphon. Some might remember them being a bit stronger, or weaker that much is true. But I doubt they'l give them regrowing limbs or some such without immeadiatly being murdered by the first slann that finds out and deems it corrupted by chaos... Though they might make completly new stuff I suppose, if you can summon armies out of thin air why not make gollemns or summon other great beast, or just imagine something. I just find it unlikely to really be "lizardmen" in that case.