I suppose that’s your choice, but it’s not a good one in my opinion.
Wilbur 1) debuffs ALL enemies’ defense by 44%, 2) buffs all allies’ defense by 63%, 3) Spirit links all enemies together and all allies together. 63% increased defense off the top on any incoming attack AND spreading it out among your team is FAR superior from a team survivability standpoint to boldtusk’s healing 28%. I’ve seen this time and again in raids - Wilbur keeps heroes with low hitpoints alive through attacks that would kill one or more without him. and before you tout Boldtusk’s 48% attack power increase - know that it basically the same as Wilbur’s 44% defense debuff.
Not saying he doesn’t need a healer - but he has Melendor for that.
This was predicated on him having Wilbur as a defense debuffer, as discussed above. If the OP is for some reason not going to bring Wilbur up, then obviously Tibs/Grimm are attractive, inferior though they are. To be fair, I don’t have any experience with Ameonna, she’s just the other purple option.
I’m not a dude, and maybe keep your editorial opinions to yourself in future.