Really hard to say...
Probably this depends on the part itself? Though making such differences makes it a bit pointless.
There are a few builds which have the underside exposed, so having the 'correct' era brick available might be beneficial here.
On another note, some parts (especially the most old and basic ones) have such a confusing array of underside differences, most sites seem to struggle keeping up with just catalogueing them. Also how do you determine which is the correct version for a specific printed brick?
Another issue is probably finding parts. Imagine you have like 3001a.dat, 3001b.dat, etc... Picking the right brick (or at least the same brick everytime) can become quite annoying in some programs.
In terms of 'realism' I would say 'yes', but in terms of practically I tend towards 'no'.
Probably this depends on the part itself? Though making such differences makes it a bit pointless.
There are a few builds which have the underside exposed, so having the 'correct' era brick available might be beneficial here.
On another note, some parts (especially the most old and basic ones) have such a confusing array of underside differences, most sites seem to struggle keeping up with just catalogueing them. Also how do you determine which is the correct version for a specific printed brick?
Another issue is probably finding parts. Imagine you have like 3001a.dat, 3001b.dat, etc... Picking the right brick (or at least the same brick everytime) can become quite annoying in some programs.
In terms of 'realism' I would say 'yes', but in terms of practically I tend towards 'no'.