Increase minimum characters for a post

[Riasat]

Possibly. However, I have visited sites with addons like you are talking about they still have where the entire content is +1 or similar short replies.

if you have one click t-up/t-down system, that is when you can make a rule against these "+1" posts and issue a quick warn/infraction to such posters.

I'm not a big fan of "Thanks" and "Like it" type of modifications, but done well, they are a single line item in between posts with a list of users who liked or thanked that post. What you're talking about, yeah I've seen it where they have the full postbit -- what's the point then?

It is a nice feature to have that "list of users".
but for busy sites, turning it off is a better idea.

so yeah, it comes down to your (or rather the admin's) preference.