I am a TWC Spectrum Cable customer from Sayre, PA 18840
I have watched the NY Mets Games on:
SNY - most of the games - and currently receiving this channel
Spectrum Sports - for many years broadcasted the Mets games (WPIX broadcast)
A few months ago, i was not able to receive Spectrum Sports (not available in my area).
In turn, I am loosing the WPIX mets games
Is there any plans to broadcast these games on another channel as I am (and will be) missing a significant amount of Mets games throughout the season?
Well, you are definitely out of the NYC Television market, so carriage of WPIX on your system is a legacy holdover as being a significantly viewed station or back when there were "SuperStations".
To that end, since you are on the PA side fo the border, I imagine you are in terriorty claimed by the Phillies (but possibly the Pirates), and may need to subscribe to MLB Extra Innings, or MLB.tv (preferred) in order to watch Mets games.
WPIX doens't show as many games as they have in the past, most are on SNY.
According to MLB.TV, zip code 18840 is in Pittsburgh Pirates home territory.
You'd be able to subscribe to MLB Extra Innings or one of the MLB streaming options to watch all Mets games except for when they play the Pirates.