Okay here's the problem with new game modes:
There are three scenarios that occur when a game adds a new mode.
- The game mode eventually fails and nobody plays it any more.
- The new mode becomes popular.
- The new mode replaces the old and becomes the "main" game mode.
In case (1), the new mode fails after a temporary period of popularity. This is the case for many post-release game modes, such as Left 4 Dead 2's "Survival" mode. I suspect this will be the fate of RO2's "Multiplayer Campaign" which was one subject of the Jan. 25 announcements, unless there are some surprise features differentiating it from Territory which have not been announced yet. If case (1) occurs, the new mode turns out to be a huge waste of time and money which would be better spent elsewhere, although it still may serve as a selling point for new buyers.
When (2) occurs, some players choose to start playing the new game mode. Now, the people who prefer the original mode or the new mode both have a harder time finding servers because there is a smaller amount of players in each individual mode. If servers are hard to find, people are more likely to play a different game. There will be some players who don't give a **** which mode they play, but I think these people are rare compared to those who pick which mode they want to play. My evidence for this is the fact that all (with 1 or 2 possible exceptions; I rarely look at the servers which I get terrible ping in) of the populated, active RO2 servers exclusively run Territory maps.
There is another possibility, case (3). Eventually, the new mode may become so popular that the old effectively becomes extinct. An example of this situation is DOTA, the Warcraft 3 custom map. Now it is almost impossible to play any other custom WC3 map, which is great if you love DOTA but not so great if you don't. This situation may also occur in RO2, where fans of the original gameplay style are relegated to the fringes.
In any of these cases, the community of players becomes fragmented. I argue that fragmentation is a bad thing in almost all cases because it shrinks the effective size of the game's player base. The result is less variety of maps, server sizes, and server-side options for players who prefer a particular game mode. This will drive people away. Shrinking player base is what kills multiplayer games because by definition a "dead" game is one nobody plays.
A common counter-argument specifically for RO2 is that a new "Classic" game mode will in fact attract new players. This is undoubtedly true if your sample size for observation is the posters on this forum. There is no way to tell if the new mode would attract more players than it scares away via fragmentation, despite everyone's conjecture.
So people who say, "What do you care, just play relaxed realism!" are promoting the idea of fragmenting the RO2 community. I fear the consequences of this attitude because I enjoy this game very much.