It depends on what size hybrids you are getting. Some of the smaller hybrids work fine with the stock turbo but with the mods you show it probably won't be long before the journal bearing gives up. The EBPV creates a very small amount of restriction. Replacing the outlet would give you much greater results than simply gutting the EPB wastegate housing.
By opening up the exhaust outlet, you will reduce EGT's but until you upgrade the turbo, you will continue to see turbo lag.