[BAILOPAN]

CTeam derives from CBaseEntity and that means changes to CTeam, CBaseEntity, or anything CBaseEntity derives from, that differ from the SDK, will result in a binary incompatibility. Anything that deals with member variables or the virtual table order (virtual functions) on a source-code level has to match.

The current SDK tends to somewhat match how Valve has compiled CS:S, but there have been periods where it has not. If the specific function/variable you're accessing works, that's great. But it may break in the future so my warning was to mentally prepare you for that if you weren't already ;)