The ideal AC would have:
1.The mystery of AC2
2.The story of AC4(obviously i mean the quality,not the story itself)
3.The MD of AC1
4.The "assassin-y" feeling of AC1
5.The side missions of ACB
6.The open world of AC4
7.The gameplay of ACU
8.The characters of AC3(like point 2)
9.The feels of ACR
10.A beautiful city like Paris or Constantinople
The worst possible AC would have:
1.The mystery of ACB
2.The story of ACU or ACB
3.The MD of ACU
4.The "assassin-y" feeling of AC3
5.The side missions of AC1
6.The open world of AC1
7.The gameplay of ...dunno AC2?
8.The characters of ACB
9.The feels of ACB or maybe ACU
10.An ugly city like NY