I agree with Ula.

I think the game would gain more popularity if more platforms were added. I love DW, but I want to command a boomer, or the Foxtrot would be great too...
This need for variety has led me to purchase Harpoon 3. I am now starting to regret that decision. The Scenario editor sucks..

10 times more buggy than ours. I also don't get the immersion as with DW
I do see Periscope Depth's point also. Sonalyst is a great company, and their product is great...but they do have to make money also.
Hopefully, in the end I hope Sonalyst will add more platforms or allow the community to do so.