They will be great to have. I have serious doubts about the numbers though. Even building to the low end seems a stretch. Also dock space, particularly in Esquimalt is in short supply. I have heard rumours of possibly creating another west coast base in Prince Rupert which would actually make a lot of sense. Also I believe the Feds need to consider an even split in naval forces between the west and east coasts. I understand Canada has always leaned harder to our NATO obligations but personally I believe the Indo Pacific should garner just as much attention. I will note there have been a lot of east coast based frigates spending a lot more time in the Pacific of late. This indicates to me a shortage of assets on the west coast.
Its basically the same distance to go to SE Asia from the East Coast as it is to go there from the West Coast. Given that the RCN is in no hurry to move assets. There is far more space on the East Coast (especially as they just bought more space as
@HaroldBloggins just mentioned)
As far as more East Coast frigates recently, its not a shortage of assets on a coast its part of a deliberate policy, Canada's Asia policy states there will be three ships a year in the Pacific. The Kingston class are the ones doing the NATO deployments assisting with the standing NATO mine countermeasures flotilla (or whatever its called).
So yah, more attention to OP HORIZON (SE Asia)/ OP NEON (Korean peninsula) than OP REASURANCE (NATO) as per gov't direction.