Todd Roybark
Hero
Personally for my concentration spell I'd stick with the tried and true Hex and Improved Pact weapon to get a +1 weapon that could also be a longbow that uses CHA for hit/dam. Who needs eldritch blast anyway?![]()
Agree with almost everything except the part about Eldritch Blast..... casting EB thru the Pact Weapon bow is like the bow from the Dungeons and Dragon Cartoon.....Hank wasn’t a Ranger in 5e

The Quadratic Fighter factor from having the multiple EB per round plus CHA bonus Via AB invo plus Hex is going to typically out damage the melee option.
Agonizing Blast (for dmg output) and Repelling Blast for Control are solid options..but less melee themed. Booming Blade combined with the stack-ability of Repelling Blast is a strong battlefield control option....combine with a free Disengage action from Haste and you are a worthy skirmisher.
Shadow of Moil (4th level Warlock spell ) is a very good option.
The Warcaster feat is useful. Improved Pact weapon already supersedes the casting spells with hands full bit of the feat, but the rest is great....advantage on Concentration is fantastic, but Booming Blade as an opportunity attack can wreck someone’s turn.
The Arcane Trickster in my group often will have Greater Invis from the Bard, Sneak Attack/ Booming Blade as their action and then reposition for a Sneak Attack/Booming Blade as an Opportunity Attack if the target moves.
The DMG and Control can really add a wrinkle to an encounter. Are you the primary tank or bonus Melee fighter?