I might even prefer if the leaves were green, gives more natural and varied look throughout the seasons. Do you know any cultivar names?There are a few named varieties that have smaller leaves. The ones I have here are green leaf types though. I don't know the small red leaf ones.
It is certainly possible that conditions have reduced the leaf size somewhat. Time will tell.
Most small leaf JM are also small trees and usually slow growing or dwarf which can make them frustrating to develop.
As I said, its not a small plant. The trunks are quite thick. Didnt look too congested either, but who knows what pruning may have been done.Small leaves typically mean slow growth and congested nodes, a couple of challenges when developing fine bonsai.
bloodgood