I just see a pretty big problem with both scales existing simultaneously. Let's say they want to release a fully sculpted Cap in 1/4 scale. Would SSC then follow that up with a 1/5 Thor? What scale would the rest of the Avengers be if they start a fully sculpted line for those characters? The Spidey line is a perfect example of this. We have a 1/4 fully sculpted Spidey, Venom, and Carnage. Rhino is rumored to be 1/4 scale as well. Why have a 1/5 Hobgoblin Com? What will be the scale of future Coms in this grouping? Will we get a 1/5 Doc Ock and a 1/4 Sandman? Will SSC release a classic 1/5 Spidey so he can be paired up with other 1/5 pieces like Hobgoblin?
Obviously any Com line that was already started in 1/5 scale should continue on and finish in the same scale. As much as people would love a 1/4 modern Cyclops, it would be a big problem for any collector who has already picked up the other 1/5 modern X-MEN Coms.
In a nutshell, I fully support what seems to be a trend towards 1/4 fully sculpted statues. I can't see how this trend won't have a huge impact on the 1/5 Com. It looks like it may become obsolete.