That tent is going to look great filled and flowering!
But if you aren't in love with the smoke it's nice to make room for new varieties! I dumped all my mothers last year with the exception of my Candida.
I find it difficult to maintain mother plants unless I prune pretty severely and root prune every 6 months or so (mine are in 1 gallon cloth pots).Note the ninth plant is my Trainwreck mother which has been a pain in the butt to maintain. I have enough bud from last run and am not that fond of its growth so I’m giving it away or composting it.
But if you aren't in love with the smoke it's nice to make room for new varieties! I dumped all my mothers last year with the exception of my Candida.