

With all that said I would suggest you select servers based on what appeals to you and not by which RPG game mode they are running you don't have to stick with just one either. In terms of map size, bigger is certainly not better, Altis with 10 people on the server can seem a very lonely place. Same goes for whitelisted server, one could argue that because there is vetting process in place it weeds out timewasters but this is not necessarily the case - this is especially true for pay to play. There is no hard and fast rule of one RPG game type having better RP. Role play (RP) quality and consistency varies wildly from server to server and is commonly not properly enforced or administered along with medical and policing factions not adhering to SOPs. you have to be approved via an application and/or interview or possibly make a monthly payment before being given access to the server) is not, again, mode specific but server specific. To answer a specific question housing was standard (iirc) in Altis Life 4.0 but can be added via scripts to other mods. Very few successful servers offer vanilla functionality as providing "unique" features adds to their player appeal.

While each RP game mode has their own baseline functionality each server can add/modify content to their own requirements by adding vehicle/weapon packs, additional mods/scripts and map features to enhance their feature set. In terms of features of functions available on Arma 3 RPG game modes this is like asking how long is a piece of string.
