hi..
well. The first is to give you tempers so that you go on with the project, it is refreshing to see that somebody wants to do something different.
In my modest opinion, i believe that the fps have a great quantity of stock published at the present time, and they all seem to go in the same types of game, That does that he finds a lot of fps for kind. If what you want to do is games without intention of profit, perfect, but if you want to take out a title that will be over the same thing you go for finding that almost there is available market for the little developers unless you count on some overwhelming graphics which requires a lot of money, people and time. For that reason I believe than initiatives like yours they would be able to work, that if with very much further work. Attempting to reach the player tired to see always the same and to the casual player, Now we are talking, attempting to do little or middling games nothing that he surpass the 6 hours of game and of hushed cost. But this only is a personal opinion, in the one that I can be wrong in.
On your game, I believe that you should work whereon all go more homogeneous, defining a style to you and next being obeyed to him,
becose you run the risk that he seem made of remnants, attempts giving more life to the scenarios, for example an animation so that the horses drink out of the drinking trough. you keeps watch the fram rate and the number of polygons always, and utilizes correctly the system of portals. It goes for serving you bit a big area of game if after does it will go very slow. For that you trie to flee from of big spaces opened.
The main thing is not to lose the tempers and the self-confidence, and a lot of work.
Good luck.
sorry, my english is really horrible.