This. If SG is just considerate and emphatic enough to feel that getting 5* heroes, classic or not, is just too darn low so that even if they are dupes, they are valuable enough that feeding them to other better 5* heroes or 4* heroes makes me shudder. I did. 10 of them. I just cant continuously buy hero cap increase from the in-game Shop as it is progressively getting expensive.
This topic has also been extensively discussed in various threads, including this:
