For each vote, indicate how the parties have whipped the vote. Ideally, have the feature indicate which MPs have dissented.
For each vote, indicate whether the vote is a one-line (free), two-line (cabinet), or three-line (whipped) vote for each party for which an MP votes.
This would make identifying dissenters easier. An advanced version of the feature would actually indicate the dissenters.
This is really important for MP democratic representation as opposed to party discipline.