Yeah it may be a good idea to look at Ravidge's 72h KOTH that also had 2 "mid" points
That said I think it works there because it's KOTH, I think in a CP map having two mids will just lead to teams capping one first without approaching the other and then the usually exciting midfight would happen... inbetween? It doesn't work out currently
Also even if you want to make a night map don't have super sparse lighting all over the map, gameplay area is way too dark right now