I would suggest to "upgrade" your proficiency by spending the money on training.
Leave the Glock as is. It is an excellent design, it is super reliable and it works.
Instructors at Gunsite, Sig Academy, Thunder Ranch or any other reputable institution, will easily demonstrate to you that proficiency with the gun in hand is way more valuable than adding more gizmos to a perfectly reliable, good working gun, any gun. Training is fun and also long lasting as it stays with you for the entire life.