If you want to make a new coin stay away from other people's used up alogorythm.
The biggest problems in crytpo are:
1. Distribution. Try to find a good way to distribute your coins. 99% of coins have absolutely terrible distribution. There are large barriers to entry and it is lopsided.
2. Blockchain redo from the ground up. Known problems are blockchain bloat, scalability, and transaction speed. You can say your coin is "innovative" but if it isn't addressing those issues, it really isn't.
3. Novel and good way to maintain the blickchsin. Don't just copy Bitcoins PoW or NXT PoS. Your not helping any doing that.