Make merged plots count as one

PlotSquared Feature Suggestion:

How should it be implemented?

If i merge a players plot and i want to rezize that merge (Take plots) i use /p unlink false and then i merge the plots again with /p merge false
but some times the road gets broken, so i have to fix the road with worldedit. it would be nice if there is a command /plot fixroad which fixed the road im standing on. regenerates only that piece of road.
It would be nice, if merged plots will counted as one. so if a player can claim 2 plots. and have 2 plots, and i merge the plots the player can claim one plot more because 1 merge = 1 plot. It would also be nice if the api method. plotplayer.getPlots() returns the plot count as merged plot = 1. it would also be nice, if this feature gets an config option to enable/disable.
Please check: https://issues.intellectualsites.com/issue/PS-148

Additional context

Checklist:

• I made sure there are no duplicates of my suggestion (Use search)
• I made sure my suggestion does not exist yet (Check the wiki)
• I made sure my suggestion is useful for the majority of PlotSquared users

Start by reviewing the /p unlink false and /p merge false commands and the PlotPlayer.getPlots() API method mentioned in the issue. Check the referenced PS-148 issue for related context; completion would need an agreed scope covering merged-plot counting, the optional configuration, and the proposed road-repair command.