I doubt Wireless Net Pavillion would agree with that.

Alsciende, the designer of netrunnerDB, thronesDB and swdestinyDB, is planning to work on a similar proyect for L5R LCG, fiveringsDB, but according to him it won't be ready before September

Is it confirmed that each player can only declare a mil and a pol conflict each round? Where? It doesn't make much sense to me. Regarding the rings, my guess is that changing the ring of a conflict would change the token, which would free the original ring to be chosen on a future conflict, perhaps by the phoenix player who changed it in the first place. This is just a guess and we'll have to wait to see the rulebook or future previews to know for sure, but I think it's a very clear and simple way for that interaction to work. Much simpler than having to remember what ring the conflict was declared on or what ir it was changed to and also strategically more interesting (imo).

250 is the total card count. The product page (https://www.fantasyflightgames.com/en/products/legend-of-the-five-rings-the-card-game/products/legend-five-rings-card-game/) shows the number of 50-sleeve sleeve packs necessary to sleeve all the included cards. 5 regular packs + 1 pack for the honor/dishonor minicards, which means between 200 and 250 regular cards, most likely close to 250. I've been doing some math with card and faction card distribution and it doesn't seem likely at all that you'll be able to build two legal 40/40 card decks with just one cose set. My guess is the recommended starter deck will be 30/30 cards or something like that. It could also be the case that you have to mix two clans to make a starter deck (similar lo agot) but i doubt it, since clan identity is so important.