i dont grow them ...

but after 3 years.. i think they are just maturing.. and the form is changing a bit ...

if you replace them.. the new ones might end up the same in 3 or 4 more years ...

i would just take the time to trim out any completely dead branches... and let them grow.. and see what happens .. once you remove the ugly dead parts.. which isnt really that much.. you might be surprised how much better they APPEAR ....

i dont see any lack of growth this year ... i think i see new leaves ... and surely the old ones arent falling off ...

they are a bit large.. for how close they are planted to the house.. if you were to take them out.. you might want to rethink placement or a different plant al together... it looks like you have been trimming off the backs to keep them off the brick ... which in my world means.. the plant has too much potential for the limited space ...

regardless.. its good to plan now.. but july/august might not be the best time for a do it yourself project, unless you are highly experienced .. but if you have the budget to pay for it.. the pros can do miracles ...

but you can buy plants now.. and HOLD THEM until a better planting time... or order them from a high end nursery for fall planting.. many such have shipments coming for that season ....

ken