I agree that warpath as a direct port from the TFC version does not flow very well in TF2. That being said, however, i played the original warpath in TFC and loved it. To my knowledge it was the first 5cp map in existence, and i loved at the time how you could push the other team back rather than simply scaling the ramparts of their fort.
My main complaint against warpath today is not so much its spaminess, there are official maps that suffer from the same problem, but rather its the amount of time it takes you to get back into the fight when you die. In my opinion the fault lies mainly in the distance between the first spawn and second capture points. I emphasize spawn here because obviously thats where you start the round and where defenders of the last point start. In general I think that stalemates occur between 4th and 5th capture point because it takes a long time for the defenders to get to their second point and a long time for the attackers to get to their 5th point.
I went to time some things at cp_granary (which i think most agree is the best balanced of the official cp maps) and heres what i found. All these times are scouts using the quickest route.
1st spawn to 2nd cp ~ 10 seconds
1st spawn to 3rd cp ~ 20 seconds
2nd cp to 3rd cp ~ 10 seconds
4th cp to 5th cp ~ 6 seconds
Now to look at the ported cp_warpath...
1st spawn to 2nd cp ~ 19 seconds
1st spawn to 3rd cp ~ 27 seconds
2nd cp to 3rd cp ~ 9 seconds
4th cp to 5th cp ~ 15 seconds
And cp_warfare...
1st spawn to 2nd cp ~ 16 seconds
1st spawn to 3rd cp ~ 24 seconds
2nd cp to 3rd cp ~ 9 seconds
4th cp to 5th cp ~ 12 seconds
EDIT: just to satisfy my curiosity cp_badlands looks like this
1st spawn to 2nd cp ~ 13 seconds
1st spawn to 3rd cp ~ 14 seconds (this is the interesting part, almost same time as it takes to get to 2nd)
2nd cp to 3rd cp ~ 7-9 seconds (faster from 2>3 than it is 3>2)
4th cp to 5th cp ~ 9 seconds
In short, you have improved the original spawn location, so now its no longer retardedly around a corner, which is great. I think, however, that the problem lies between the 1st and second points. In granary that distance is very short, making it difficult for defenders and therefore not leaning towards too many stalemates. Conversly though, a good push by the defenders doesnt have to slog too far to get to their 2nd point.
I guess what i am trying to ask is if theres any way to shorten that distance between 2nd and 1st? Perhaps i leave myself open to complaints that then youre just making another granary, but i think the architecture of the map precludes that.