I don't see this as a big problem for several reasons:
1. rolling dice remains the default way to generate ability scores, so that means what you roll has a lot more to do with how viable a class is. Roll two natural 16s and you are set and well ahead on the "ASI tree". If your highest roll is one 14 then a MAD class is a bad choice anyway and the dice are dictating that more than the feats are.
2. If they keep standard human that gives a +6 boost to abilities at generation, while still getting a 1st level feat and again this puts you way ahead on the ASI tree. As it is right now in 5E standard human is almost never used for point buy builds as they tend to focus on the extremes-high stats and dump stats, but standard human is one of the most common options for rolled builds due to the huge impact it has on your stats. With standard human getting a feat and inspiration after every rest I think it will be an even more attractive option.
3. You can still use a half-feat to boost an odd stat to even. So in a case of point buy you can plan for this by starting with a 15 or 17 in a key stat without being behind.
4. There is way too much emphasis on maximizing stats on message boards. This is out of proportion to the actual value of a 20 vs a 16. A Monk with a 16 Dex and 16 Wisdom is very playable into level 15+. I have personally played the following examples:
V. Human Fighter Arcane Archer 7-Rogue Arcane Trickster 8-Shadow Sorcerer1 with an 8 strength, 16 Dex, 10 Constitution, 18 Intelligence and 13 Charisma at level 16. She had martial adept, Fey Touched (intelligence), Shadow Touched (intelligence), Telekenetic (intelligence) and Sharpshooter.
I also played a Goblin Fey Wanderer Ranger 14/Rogue 1 with a 16 dex, 10 con and 19 Wisdom at 15th level. She took 3 half-wisdom feats telepathic, shadow touched, Gift of Gem Dragon. Your stats and choices dictate your style of play and there are some really bad choices out there, but there are builds beyond the templates that can be very effective at all tiers with 16s in your main stats.
Considering all 3 phases, the Goblin Fey Wanderer/Rogue in particular was the most powerful character at that table at the end of the game, including the Evocation Wizard and Divine Soul Sorcerer we had. With a 10 con and a 16 in her main attack stat, she is still one of the most powerful tier 4 characters I have ever played. The Fighter/Rogue/Sorc was not the most powerful but good, viable, fun and played well despite many "suboptimal" choices.