I think there is a problem with Topics being locked without any reason given, nor any warning.
On multiple occasions I have had a topic or been on one, where a conversation is happening and suddenly the topic is locked, without any warning or reason. Because a mod decided they could lock it. Yes, they have the power to do so, but when a topic is used, and something is being discussed, it's just not POLITE to lock down someone's topic.
If people are being civil and sharing opinions, and not doing anything against the rules. Topics should not be just locked.