It would be nice if the database could be recovered... but failing that: GoW and UT3 support can be fixed by putting them back in the database. Its rather pointless to try to recovery any of the new maps without the database data because we lost the map data and user data. Trying to recover them would be a grueling process, the maps would have to be scanned, have to be reassociated with the users, etc... we're talking manually processing like 1000 maps. There are other difficulties too, like determining which 1000 files need to be re-imported.
Therefore, either recover the database or put the gametypes in the database and be done with it. Uploading maps that were lost will result in them being overwritten in the file space once they are approved and added to NC.